ejercicios de suma y resta
DESCRIPTION
sumas y restasTRANSCRIPT
Nombre (name): ________________________________ Fecha (date): _____________
● 1.a. Cuadrículas de suma y resta (addition and subtraction grids)
7 − 5 = + = 9
− + + + −
+ 2 = 7 + = 8
= = = = =
2 + = 9 − =
+ − − − +
4 + = + 1 = 8
= = = = =
− 4 = + 7 =
+ 7 = + 1 =
+ − + + −
8 − 7 = + = 9
= = = = =
− 0 = 10 − = 1
− + − − +
0 + = 9 − =
= = = = =
10 − = + 2 = 3
9 − = + 3 = 10
− + + − −
− 4 = − 2 =
= = = = =
3 + 6 = + = 10
− + + + −
+ 1 = 1 + = 4
= = = = =
3 + = 10 − =
1 + = 3 + =
+ + − − −
4 − = + 7 = 9
= = = = =
− 4 = − 0 =
− + + + +
4 + 2 = − = 3
= = = = =
+ 6 = 7 − = 4
+ 3 = 9 − = 9
− + − + −
3 − = 0 + =
= = = = =
3 + = − 5 = 4
+ + − + +
+ 2 = − 3 =
= = = = =
9 − 8 = + = 9
3 − 2 = + = 9
− + + − −
+ 6 = 8 − = 5
= = = = =
1 + = 9 − =
+ − − + +
2 + = − 3 = 5
= = = = =
− 2 = + 8 =
2009 neoparaiso.com/imprimir Versión 2009-06-15
Nombre (name): ________________________________ Fecha (date): _____________
● 1.b. Cuadrículas de suma y resta (addition and subtraction grids)
− 5 = + 7 =
− + + + −
5 + 2 = + = 8
= = = = =
+ 7 = 9 − = 1
+ − − − +
4 + = 7 + =
= = = = =
6 − = + 7 = 9
2 + = + 1 = 10
+ − + + −
− 7 = + 8 =
= = = = =
10 + 0 = − = 1
+ + − − +
+ 9 = 9 − = 2
= = = = =
10 − = 1 + =
9 − = 7 + =
− + + − −
6 − = − 2 = 0
= = = = =
+ 6 = + 1 =
− + + + −
0 + 1 = + = 4
= = = = =
+ 7 = 10 − = 6
+ 2 = 3 + = 10
+ + − − −
4 − = 2 + =
= = = = =
5 − = − 0 = 1
− + + + +
+ 2 = − 3 =
= = = = =
1 + 6 = − = 4
6 + 3 = − = 9
− + − + −
− 3 = 0 + = 5
= = = = =
3 + = 9 − =
+ + − + +
6 + = − 3 = 5
= = = = =
− 8 = + 8 =
− 2 = + 8 =
− + + − −
2 + 6 = − = 5
= = = = =
+ 8 = 9 − = 4
+ − − + +
2 + = 8 − =
= = = = =
3 − = + 8 = 9
2009 neoparaiso.com/imprimir Versión 2009-06-15
Nombre (name): ________________________________ Fecha (date): _____________
● 2.a. Cuadrículas de suma y resta (addition and subtraction grids)
6 − = + 8 = 9
− + + − −
+ 3 = − 2 =
= = = = =
1 + 8 = − = 3
+ − − + +
+ 3 = 8 − = 6
= = = = =
6 − = 1 + =
4 + = 10 − =
+ − + + −
4 − = + 3 = 3
= = = = =
+ 2 = − 3 =
+ + − + +
2 + 5 = − = 3
= = = = =
− 7 = 3 + = 10
+ 8 = 9 − = 7
+ − − − +
8 − = 1 + =
= = = = =
9 − = + 1 = 9
+ − + + −
+ 1 = + 5 =
= = = = =
9 − 0 = − = 3
1 + 1 = + = 8
+ + − − −
− 4 = 1 + = 7
= = = = =
6 − = 1 + =
− + + + +
5 + = − 2 = 7
= = = = =
+ 9 = − 2 =
− 2 = + 7 =
− + + − −
2 + 5 = − = 2
= = = = =
+ 7 = 9 − = 7
+ − − + +
3 + = 7 − =
= = = = =
5 − = + 7 = 9
1 + = + 2 = 5
− + + + −
+ 6 = − 4 =
= = = = =
1 + 8 = − = 3
+ − − − +
− 3 = 5 + = 6
= = = = =
9 − = 4 + =
2009 neoparaiso.com/imprimir Versión 2009-06-15
Nombre (name): ________________________________ Fecha (date): _____________
● 2.b. Cuadrículas de suma y resta (addition and subtraction grids)
6 − = 1 + =
− + + − −
5 + = − 2 = 6
= = = = =
+ 8 = − 6 =
+ − − + +
5 + 3 = − = 6
= = = = =
− 5 = 1 + = 9
+ 6 = 10 − = 10
+ − − + −
4 − = 0 + =
= = = = =
8 + = − 3 = 7
+ + − + +
+ 5 = − 4 =
= = = = =
10 − 7 = + = 10
1 + 8 = − = 7
+ − − − +
− 7 = 1 + = 2
= = = = =
9 − = 8 + =
+ − + + −
0 + = + 5 = 6
= = = = =
+ 0 = − 6 =
+ 1 = + 6 =
+ + − − −
5 − 4 = + = 7
= = = = =
− 5 = 1 − = 1
− + + + +
5 + = 9 − =
= = = = =
1 + = − 2 = 8
4 − = + 7 = 9
− + + − −
+ 5 = − 5 =
= = = = =
2 + 7 = − = 7
+ − − + +
+ 4 = 7 − = 2
= = = = =
5 − = 2 + =
1 + = 3 + =
− + + + −
0 + = − 4 = 2
= = = = =
+ 8 = − 6 =
+ − − − +
8 − 3 = + = 6
= = = = =
− 5 = 4 + = 9
2009 neoparaiso.com/imprimir Versión 2009-06-15
Nombre (name): ________________________________ Fecha (date): _____________
● 3.a. Cuadrículas de suma y resta (addition and subtraction grids)
+ 1 = 2 + = 9
− + + − −
0 + = 7 − =
= = = = =
1 + = − 3 = 6
− − − − +
+ 2 = + 1 =
= = = = =
1 + 6 = + = 9
7 − 3 = + = 4
− − + + +
+ 1 = 3 + = 6
= = = = =
5 + = 7 + =
+ + − + +
2 + = − 5 = 0
= = = = =
− 5 = + 8 =
+ 1 = + 4 =
− + + + −
0 + 6 = − = 4
= = = = =
+ 7 = 9 − = 3
+ − − − +
7 − = 5 + =
= = = = =
9 − = + 5 = 9
1 + = + 2 = 10
+ − + + −
− 7 = + 6 =
= = = = =
10 − 0 = − = 2
+ + − − +
+ 8 = 8 − = 3
= = = = =
10 − = 2 + =
1 + = 9 − =
+ − − − −
8 − = + 0 = 3
= = = = =
− 3 = − 4 =
− − − − +
5 − 3 = + = 4
= = = = =
− 0 = 4 + = 6
− 3 = 1 + = 9
− + + − −
3 + = 8 − =
= = = = =
1 + = − 7 = 2
+ − − + +
+ 4 = − 1 =
= = = = =
5 − 4 = + = 9
2009 neoparaiso.com/imprimir Versión 2009-06-15
Nombre (name): ________________________________ Fecha (date): _____________
● 3.b. Cuadrículas de suma y resta (addition and subtraction grids)
1 + 1 = + = 9
+ + + − −
+ 7 = 7 − = 3
= = = = =
1 + = 9 − =
− − − − +
0 + = + 1 = 3
= = = = =
+ 6 = + 2 =
− 3 = + 0 =
− − + + +
2 + 1 = + = 6
= = = = =
+ 2 = 7 + = 10
+ + − + +
2 + = 5 − =
= = = = =
7 − = + 8 = 10
2 + = + 4 = 7
− + + + −
+ 6 = − 2 =
= = = = =
2 + 7 = − = 3
+ − − − +
− 2 = 5 + = 6
= = = = =
9 − = 4 + =
1 + = 8 + =
+ − + + −
9 − = + 6 = 8
= = = = =
− 0 = − 8 =
+ + − − +
0 + 8 = − = 3
= = = = =
− 8 = 2 + = 5
+ 8 = 9 − = 5
+ − − − −
8 − = 3 − =
= = = = =
9 − = − 4 = 2
− − − − +
− 3 = + 2 =
= = = = =
4 − 0 = + = 6
4 − 3 = + = 9
− + + − −
+ 5 = 8 − = 7
= = = = =
1 + = 9 − =
+ − − + +
4 + = − 1 = 7
= = = = =
− 4 = + 8 =
2009 neoparaiso.com/imprimir Versión 2009-06-15
Nombre (name): ________________________________ Fecha (date): _____________
■ 4.a. Cuadrículas de suma y resta (addition and subtraction grids)
19 + 66 = − = 63
− − − + +
+ 36 = 42 − = 22
= = = = =
13 + = 43 + =
+ − + + −
60 − = − 3 = 42
= = = = =
+ 15 = − 45 =
+ 48 = − 10 =
− − − + +
33 + 11 = − = 10
= = = = =
+ 37 = 42 + = 86
+ − + + −
62 − = 48 − =
= = = = =
67 + = − 48 = 42
36 + = − 10 = 42
+ + − + −
+ 18 = + 3 =
= = = = =
52 − 34 = − = 5
− − − + +
− 15 = 13 + = 25
= = = = =
24 − = 5 + =
51 + = 74 − =
+ + − + −
23 + = + 4 = 48
= = = = =
− 44 = − 16 =
− − − + +
41 − 25 = + = 29
= = = = =
− 19 = 14 + = 43
+ 29 = 87 − = 53
+ + − − −
29 + = 52 − =
= = = = =
87 − = − 21 = 14
− − − + +
− 42 = + 11 =
= = = = =
24 − 10 = + = 46
65 + 3 = − = 58
+ + − + −
+ 35 = 38 + = 47
= = = = =
68 − = 30 − =
− − − + +
42 − = + 13 = 32
= = = = =
− 15 = + 32 =
2009 neoparaiso.com/imprimir Versión 2009-06-15
Nombre (name): ________________________________ Fecha (date): _____________
■ 4.b. Cuadrículas de suma y resta (addition and subtraction grids)
+ 66 = − 22 =
− − − + +
6 + 36 = − = 22
= = = = =
+ 30 = 43 + = 85
+ − + + −
60 − = 45 − =
= = = = =
73 + = − 45 = 43
38 + = − 10 = 76
− − − + +
+ 11 = − 34 =
= = = = =
5 + 37 = + = 86
+ − + + −
− 14 = 48 − = 44
= = = = =
67 + = 90 − =
36 + = 52 − =
+ + − + −
16 + = + 3 = 37
= = = = =
− 34 = − 13 =
− − − + +
28 − 15 = + = 25
= = = = =
− 19 = 5 + = 30
+ 23 = 74 − = 62
+ + − + −
23 + = 44 + =
= = = = =
74 − = − 16 = 14
− − − + +
− 25 = + 13 =
= = = = =
33 − 19 = + = 43
58 + 29 = − = 53
+ + − − −
+ 23 = 52 − = 39
= = = = =
87 − = 35 − =
− − − + +
63 − = + 11 = 32
= = = = =
− 10 = + 32 =
+ 3 = − 10 =
+ + − + −
3 + 35 = + = 47
= = = = =
− 38 = 30 − = 11
− − − + +
42 − = 19 + =
= = = = =
26 − = + 32 = 43
2009 neoparaiso.com/imprimir Versión 2009-06-15
Nombre (name): ________________________________ Fecha (date): _____________
■ 5.a. Cuadrículas de suma y resta (addition and subtraction grids)
51 + = − 22 = 63
+ + − − −
+ 16 = − 10 =
= = = = =
85 − 50 = − = 23
− − − + +
− 14 = 12 + = 25
= = = = =
59 − = 23 + =
15 + = 57 − =
− − − − +
1 + = + 17 = 31
= = = = =
+ 29 = + 14 =
+ − + + −
59 − 18 = − = 14
= = = = =
+ 11 = 84 − = 43
+ 59 = 78 − = 48
− − − + +
4 + = 40 − =
= = = = =
15 + = + 40 = 78
+ − + − −
− 11 = + 18 =
= = = = =
48 + 12 = − = 38
47 + 45 = − = 59
+ + − − −
+ 17 = 62 − = 48
= = = = =
92 − = 30 − =
− − − + +
43 − = + 10 = 29
= = = = =
− 38 = + 29 =
+ 66 = − 46 =
− − − + +
13 + 36 = − = 46
= = = = =
+ 30 = 42 + = 91
+ − + − −
39 − = 28 + =
= = = = =
51 + = − 28 = 42
21 + = − 14 = 77
− − − + +
+ 26 = − 32 =
= = = = =
1 + 44 = + = 91
+ − + − −
− 14 = 28 + = 46
= = = = =
43 + = 73 − =
2009 neoparaiso.com/imprimir Versión 2009-06-15
Nombre (name): ________________________________ Fecha (date): _____________
■ 5.b. Cuadrículas de suma y resta (addition and subtraction grids)
51 + = 85 − =
+ + − − −
34 + = − 10 = 40
= = = = =
− 50 = − 12 =
− − − + +
26 − 14 = + = 25
= = = = =
− 36 = 23 + = 48
+ 42 = 57 − = 26
− − − − +
1 + = 14 + =
= = = = =
14 + = + 14 = 57
+ − + + −
− 18 = − 27 =
= = = = =
73 + 11 = − = 43
19 + 59 = − = 48
− − − + +
+ 36 = 40 − = 30
= = = = =
15 + = 38 + =
+ − + − −
33 − = + 18 = 40
= = = = =
+ 12 = − 22 =
+ 45 = − 33 =
+ + − − −
45 + 17 = − = 48
= = = = =
− 62 = 30 − = 11
− − − + +
43 − = 19 + =
= = = = =
49 − = + 29 = 40
25 + = − 46 = 45
− − − + +
+ 36 = − 3 =
= = = = =
12 + 30 = + = 91
+ − + − −
− 11 = 28 + = 49
= = = = =
51 + = 70 − =
21 + = 91 − =
− − − + +
20 + = − 32 = 14
= = = = =
+ 44 = + 46 =
+ − + − −
42 − 14 = + = 46
= = = = =
+ 30 = 73 − = 45
2009 neoparaiso.com/imprimir Versión 2009-06-15
Nombre (name): ________________________________ Fecha (date): _____________
■ 6.a. Cuadrículas de suma y resta (addition and subtraction grids)
+ 31 = 93 − = 49
+ + − − −
31 + = 64 − =
= = = = =
93 − = − 10 = 19
− − − + +
− 42 = + 16 =
= = = = =
41 − 22 = + = 45
15 + 60 = − = 64
− − − + +
+ 23 = 31 − = 11
= = = = =
7 + = 44 + =
+ − + + −
51 − = − 10 = 31
= = = = =
+ 27 = − 41 =
+ 61 = − 16 =
− − − + +
15 + 20 = − = 16
= = = = =
+ 41 = 49 + = 84
+ − + − −
36 − = 14 + =
= = = = =
44 + = − 14 = 49
49 + = − 15 = 55
+ + − + −
+ 22 = + 4 =
= = = = =
70 − 43 = − = 8
− − − + +
− 20 = 19 + = 32
= = = = =
31 − = 8 + =
35 + = 51 − =
+ + − + −
16 + = + 7 = 33
= = = = =
− 26 = − 17 =
− − − + +
32 − 15 = + = 29
= = = = =
− 11 = 8 + = 37
+ 42 = 95 − = 74
− − − + +
36 + = 49 − =
= = = = =
17 + = + 49 = 95
+ − + − −
− 14 = + 2 =
= = = = =
78 + 15 = − = 46
2009 neoparaiso.com/imprimir Versión 2009-06-15
Nombre (name): ________________________________ Fecha (date): _____________
■ 6.b. Cuadrículas de suma y resta (addition and subtraction grids)
62 + 31 = − = 49
+ + − − −
+ 33 = 64 − = 30
= = = = =
93 − = 29 − =
− − − + +
52 − = + 16 = 26
= = = = =
− 22 = + 26 =
+ 60 = − 11 =
− − − + +
8 + 23 = − = 11
= = = = =
+ 37 = 44 + = 75
+ − + + −
51 − = 41 − =
= = = = =
58 + = − 41 = 44
23 + = − 16 = 68
− − − + +
+ 20 = − 19 =
= = = = =
8 + 41 = + = 84
+ − + − −
− 22 = 14 + = 35
= = = = =
44 + = 63 − =
49 + = 70 − =
+ + − + −
21 + = + 4 = 47
= = = = =
− 43 = − 19 =
− − − + +
39 − 20 = + = 32
= = = = =
− 23 = 8 + = 40
+ 16 = 51 − = 41
+ + − + −
16 + = 26 + =
= = = = =
51 − = − 17 = 8
− − − + +
− 15 = + 12 =
= = = = =
19 − 11 = + = 37
53 + 42 = − = 74
− − − + +
+ 13 = 49 − = 21
= = = = =
17 + = 46 + =
+ − + − −
61 − = + 2 = 49
= = = = =
+ 15 = − 47 =
2009 neoparaiso.com/imprimir Versión 2009-06-15
Nombre (name): ________________________________ Fecha (date): _____________
■ 7.a. Cuadrículas de suma y resta (addition and subtraction grids)
+ 42 = − 31 =
− − − − +
11 + 19 = + = 31
= = = = =
+ 23 = 40 + = 70
+ − + + −
51 − = 41 − =
= = = = =
68 + = − 41 = 40
15 + = − 31 = 35
− − − − +
+ 15 = + 10 =
= = = = =
9 + 36 = + = 66
+ − + + −
− 24 = 47 − = 21
= = = = =
80 + = 92 − =
46 + = 90 − =
− − − − +
31 + = + 2 = 47
= = = = =
+ 30 = + 45 =
+ − + − −
58 − 18 = + = 45
= = = = =
+ 12 = 85 − = 45
+ 47 = 83 − = 38
− − − − +
26 + = 43 + =
= = = = =
10 + = + 43 = 83
+ − + − −
− 13 = + 32 =
= = = = =
34 + 17 = − = 40
16 + 54 = − = 35
− − − − +
+ 15 = 26 + = 35
= = = = =
5 + = 44 + =
+ − + + −
69 − = − 21 = 26
= = = = =
+ 17 = − 47 =
+ 48 = − 34 =
− − − − +
1 + 18 = + = 34
= = = = =
+ 30 = 43 + = 62
+ − + + −
63 − = 43 − =
= = = = =
76 + = − 43 = 43
2009 neoparaiso.com/imprimir Versión 2009-06-15
Nombre (name): ________________________________ Fecha (date): _____________
■ 7.b. Cuadrículas de suma y resta (addition and subtraction grids)
28 + = − 31 = 39
− − − − +
+ 19 = + 1 =
= = = = =
17 + 23 = + = 70
+ − + + −
− 10 = 41 − = 30
= = = = =
68 + = 81 − =
15 + = 66 − =
− − − − +
6 + = + 10 = 31
= = = = =
+ 36 = + 21 =
+ − + + −
71 − 24 = − = 21
= = = = =
+ 12 = 92 − = 45
+ 44 = 90 − = 43
− − − − +
31 + = 45 + =
= = = = =
15 + = + 45 = 90
+ − + − −
− 18 = + 5 =
= = = = =
73 + 12 = − = 45
36 + 47 = − = 38
− − − − +
+ 17 = 43 + = 45
= = = = =
10 + = 40 + =
+ − + − −
24 − = + 32 = 43
= = = = =
+ 17 = − 11 =
+ 54 = − 35 =
− − − − +
11 + 15 = + = 35
= = = = =
+ 39 = 44 + = 70
+ − + + −
69 − = 47 − =
= = = = =
74 + = − 47 = 44
14 + = − 34 = 28
− − − − +
+ 18 = + 15 =
= = = = =
13 + 30 = + = 62
+ − + + −
− 20 = 43 − = 19
= = = = =
76 + = 86 − =
2009 neoparaiso.com/imprimir Versión 2009-06-15
Nombre (name): ________________________________ Fecha (date): _____________
■ 8.a. Cuadrículas de suma y resta (addition and subtraction grids)
34 + = 88 − =
− − − + +
23 + = − 29 = 12
= = = = =
+ 36 = + 41 =
+ − + + −
68 − 22 = − = 41
= = = = =
+ 14 = 93 − = 47
+ 55 = 87 − = 72
− − − + +
22 + = 43 − =
= = = = =
10 + = + 43 = 87
+ − + + −
− 19 = − 5 =
= = = = =
77 + 15 = − = 44
29 + 57 = − = 45
− − − − +
+ 13 = 40 + = 41
= = = = =
2 + = 46 + =
+ − + − −
41 − = + 15 = 40
= = = = =
+ 28 = − 25 =
+ 51 = − 16 =
− − − + +
14 + 23 = − = 16
= = = = =
+ 28 = 40 + = 77
+ − + + −
57 − = 46 − =
= = = = =
69 + = − 46 = 40
12 + = − 44 = 18
− − − − +
+ 13 = + 22 =
= = = = =
3 + 37 = + = 62
+ − + + −
− 17 = 48 − = 22
= = = = =
68 + = 88 − =
31 + = 80 − =
− − − − +
22 + = + 15 = 47
= = = = =
+ 39 = + 32 =
+ − + − −
54 − 23 = + = 32
= = = = =
+ 16 = 79 − = 48
2009 neoparaiso.com/imprimir Versión 2009-06-15
Nombre (name): ________________________________ Fecha (date): _____________
■ 8.b. Cuadrículas de suma y resta (addition and subtraction grids)
+ 54 = 88 − = 76
− − − + +
23 + = 41 − =
= = = = =
11 + = + 41 = 88
+ − + + −
− 22 = − 5 =
= = = = =
79 + 14 = − = 47
32 + 55 = − = 72
− − − + +
+ 21 = 43 − = 15
= = = = =
10 + = 44 + =
+ − + + −
67 − = − 5 = 43
= = = = =
+ 15 = − 48 =
+ 57 = − 41 =
− − − − +
27 + 13 = + = 41
= = = = =
+ 44 = 46 + = 86
+ − + − −
41 − = 25 + =
= = = = =
43 + = − 25 = 46
26 + = − 16 = 61
− − − + +
+ 23 = − 21 =
= = = = =
12 + 28 = + = 77
+ − + + −
− 11 = 46 − = 37
= = = = =
69 + = 86 − =
12 + = 62 − =
− − − − +
9 + = + 22 = 44
= = = = =
+ 37 = + 22 =
+ − + + −
65 − 17 = − = 22
= = = = =
+ 20 = 88 − = 40
+ 49 = 80 − = 33
− − − − +
22 + = 32 + =
= = = = =
9 + = + 32 = 80
+ − + − −
− 23 = + 1 =
= = = = =
63 + 16 = − = 48
2009 neoparaiso.com/imprimir Versión 2009-06-15
Nombre (name): ________________________________ Fecha (date): _____________
■ 9.a. Cuadrículas de suma y resta (addition and subtraction grids)
37 + 55 = − = 50
+ + − − −
+ 12 = 67 − = 36
= = = = =
92 − = 25 − =
− − − + +
32 − = + 13 = 24
= = = = =
− 46 = + 24 =
+ 45 = − 63 =
+ + − − −
45 + 14 = − = 13
= = = = =
− 59 = 29 − = 12
− − − + +
35 − = 17 + =
= = = = =
53 − = + 37 = 49
45 + = − 49 = 39
+ + − − −
+ 18 = − 35 =
= = = = =
88 − 61 = − = 13
− − − + +
− 28 = 14 + = 24
= = = = =
46 − = 13 + =
19 + = 83 − =
− − − + +
1 + = − 10 = 27
= = = = =
+ 28 = + 37 =
+ − + − −
30 − 16 = + = 37
= = = = =
+ 12 = 60 − = 46
+ 50 = 91 − = 57
− − − + +
31 + = 45 − =
= = = = =
10 + = + 45 = 91
+ − + − −
− 22 = + 24 =
= = = = =
53 + 14 = − = 46
18 + 74 = − = 71
− − − + +
+ 31 = 43 − = 21
= = = = =
6 + = 49 + =
+ − + − −
30 − = + 27 = 43
= = = = =
+ 29 = − 16 =
2009 neoparaiso.com/imprimir Versión 2009-06-15
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■ 9.b. Cuadrículas de suma y resta (addition and subtraction grids)
+ 55 = − 42 =
+ + − − −
55 + 12 = − = 36
= = = = =
− 67 = 25 − = 14
− − − + +
32 − = 11 + =
= = = = =
60 − = + 24 = 38
43 + = − 63 = 25
+ + − − −
+ 14 = − 46 =
= = = = =
88 − 59 = − = 12
− − − + +
− 18 = 17 + = 37
= = = = =
53 − = 12 + =
45 + = 88 − =
+ + − − −
43 + = − 35 = 26
= = = = =
− 61 = − 14 =
− − − + +
42 − 28 = + = 24
= = = = =
− 33 = 13 + = 37
+ 64 = 83 − = 56
− − − + +
1 + = 37 − =
= = = = =
18 + = + 37 = 83
+ − + − −
− 16 = + 23 =
= = = = =
48 + 12 = − = 46
41 + 50 = − = 57
− − − + +
+ 14 = 45 − = 34
= = = = =
10 + = 46 + =
+ − + − −
43 − = + 24 = 45
= = = = =
+ 14 = − 21 =
+ 74 = − 21 =
− − − + +
12 + 31 = − = 21
= = = = =
+ 43 = 49 + = 92
+ − + − −
30 − = 16 + =
= = = = =
36 + = − 16 = 49
2009 neoparaiso.com/imprimir Versión 2009-06-15
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■ 10.a. Cuadrículas de suma y resta (addition and subtraction grids)
44 + = − 28 = 69
− − − + +
+ 19 = − 20 =
= = = = =
15 + 34 = + = 97
+ − + + −
− 11 = 49 − = 48
= = = = =
75 + = 98 − =
43 + = 83 − =
− − − + +
21 + = − 23 = 16
= = = = =
+ 22 = + 39 =
+ − + − −
26 − 12 = + = 39
= = = = =
+ 10 = 58 − = 44
+ 43 = 93 − = 32
+ + − − −
43 + = 63 − =
= = = = =
93 − = − 19 = 11
− − − + +
− 36 = + 16 =
= = = = =
38 − 27 = + = 46
62 + 30 = − = 67
+ + − − −
+ 29 = 59 − = 46
= = = = =
92 − = 33 − =
− − − + +
48 − = + 10 = 22
= = = = =
− 23 = + 22 =
+ 66 = − 49 =
− − − − +
10 + 32 = + = 49
= = = = =
+ 34 = 45 + = 87
+ − + − −
39 − = 20 + =
= = = = =
50 + = − 20 = 45
17 + = − 15 = 48
− − − + +
+ 10 = − 8 =
= = = = =
4 + 36 = + = 63
+ − + + −
− 21 = 34 − = 23
= = = = =
59 + = 74 − =
2009 neoparaiso.com/imprimir Versión 2009-06-15
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■ 10.b. Cuadrículas de suma y resta (addition and subtraction grids)
44 + = 97 − =
− − − + +
29 + = − 20 = 28
= = = = =
+ 34 = + 48 =
+ − + + −
60 − 11 = − = 48
= = = = =
+ 23 = 98 − = 49
+ 40 = 83 − = 67
− − − + +
21 + = 39 − =
= = = = =
22 + = + 39 = 83
+ − + − −
− 12 = + 25 =
= = = = =
48 + 10 = − = 44
50 + 43 = − = 32
+ + − − −
+ 20 = 63 − = 21
= = = = =
93 − = 30 − =
− − − + +
55 − = + 16 = 35
= = = = =
− 27 = + 35 =
+ 30 = − 25 =
+ + − − −
30 + 29 = − = 46
= = = = =
− 59 = 33 − = 21
− − − + +
48 − = 12 + =
= = = = =
44 − = + 22 = 43
21 + = − 49 = 38
− − − − +
+ 32 = + 7 =
= = = = =
11 + 34 = + = 87
+ − + − −
− 19 = 20 + = 42
= = = = =
50 + = 65 − =
17 + = 63 − =
− − − + +
13 + = − 8 = 15
= = = = =
+ 36 = + 23 =
+ − + + −
55 − 21 = − = 23
= = = = =
+ 15 = 74 − = 40
2009 neoparaiso.com/imprimir Versión 2009-06-15
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■ 11.a. Cuadrículas de suma y resta (addition and subtraction grids)
+ 41 = 91 − = 30
+ + − − −
41 + = 62 − =
= = = = =
91 − = − 17 = 12
− − − + +
− 40 = + 20 =
= = = = =
34 − 22 = + = 49
25 + 46 = − = 52
− − − + +
+ 23 = 39 − = 19
= = = = =
9 + = 32 + =
+ − + + −
53 − = − 1 = 39
= = = = =
+ 10 = − 40 =
+ 2 = − 10 =
+ + − + −
2 + 24 = + = 33
= = = = =
− 26 = 28 − = 11
− − − + +
29 − = 17 + =
= = = = =
25 − = + 38 = 49
43 + = − 49 = 42
+ + − − −
+ 11 = − 34 =
= = = = =
91 − 59 = − = 17
− − − + +
− 40 = 15 + = 28
= = = = =
36 − = 17 + =
21 + = 85 − =
− − − + +
4 + = − 33 = 12
= = = = =
+ 23 = + 45 =
+ − + − −
36 − 13 = + = 45
= = = = =
+ 10 = 63 − = 40
+ 39 = 73 − = 25
− − − − +
19 + = 37 + =
= = = = =
15 + = + 37 = 73
+ − + − −
− 11 = + 8 =
= = = = =
55 + 10 = − = 36
2009 neoparaiso.com/imprimir Versión 2009-06-15
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■ 11.b. Cuadrículas de suma y resta (addition and subtraction grids)
50 + 41 = − = 30
+ + − − −
+ 21 = 62 − = 18
= = = = =
91 − = 29 − =
− − − + +
57 − = + 20 = 37
= = = = =
− 22 = + 37 =
+ 46 = − 19 =
− − − + +
16 + 23 = − = 19
= = = = =
+ 23 = 32 + = 71
+ − + + −
53 − = 40 − =
= = = = =
62 + = − 40 = 32
52 + = − 10 = 44
+ + − + −
+ 24 = + 7 =
= = = = =
54 − 26 = − = 11
− − − + +
− 12 = 17 + = 38
= = = = =
25 − = 11 + =
43 + = 91 − =
+ + − − −
48 + = − 34 = 25
= = = = =
− 59 = − 15 =
− − − + +
55 − 40 = + = 28
= = = = =
− 19 = 17 + = 45
+ 64 = 85 − = 73
− − − + +
4 + = 45 − =
= = = = =
17 + = + 45 = 85
+ − + − −
− 13 = + 22 =
= = = = =
53 + 10 = − = 40
34 + 39 = − = 25
− − − − +
+ 18 = 37 + = 48
= = = = =
15 + = 36 + =
+ − + − −
40 − = + 8 = 37
= = = = =
+ 10 = − 29 =
2009 neoparaiso.com/imprimir Versión 2009-06-15
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■ 12.a. Cuadrículas de suma y resta (addition and subtraction grids)
+ 41 = − 37 =
− − − − +
22 + 10 = + = 37
= = = = =
+ 31 = 42 + = 74
+ − + + −
49 − = 36 − =
= = = = =
60 + = − 36 = 42
38 + = − 15 = 73
− − − + +
+ 13 = − 25 =
= = = = =
11 + 37 = + = 88
+ − + + −
− 12 = 45 − = 40
= = = = =
68 + = 93 − =
26 + = 97 − =
− − − + +
20 + = − 21 = 27
= = = = =
+ 43 = + 48 =
+ − + − −
62 − 30 = + = 48
= = = = =
+ 13 = 81 − = 49
+ 51 = 97 − = 61
+ + − − −
51 + = 75 − =
= = = = =
97 − = − 10 = 12
− − − + +
− 34 = + 25 =
= = = = =
53 − 41 = + = 47
41 + 39 = − = 54
− − − + +
+ 17 = 33 − = 26
= = = = =
25 + = 47 + =
+ − + − −
30 − = + 13 = 33
= = = = =
+ 12 = − 20 =
+ 48 = − 21 =
− − − + +
16 + 27 = − = 21
= = = = =
+ 21 = 41 + = 84
+ − + − −
42 − = 31 + =
= = = = =
62 + = − 31 = 41
2009 neoparaiso.com/imprimir Versión 2009-06-15
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■ 12.b. Cuadrículas de suma y resta (addition and subtraction grids)
33 + = − 37 = 37
− − − − +
+ 10 = + 5 =
= = = = =
11 + 31 = + = 74
+ − + + −
− 13 = 36 − = 32
= = = = =
60 + = 78 − =
38 + = 88 − =
− − − + +
27 + = − 25 = 15
= = = = =
+ 37 = + 40 =
+ − + + −
57 − 12 = − = 40
= = = = =
+ 25 = 93 − = 48
+ 71 = 97 − = 70
− − − + +
20 + = 48 − =
= = = = =
6 + = + 48 = 97
+ − + − −
− 30 = + 16 =
= = = = =
68 + 13 = − = 49
46 + 51 = − = 61
+ + − − −
+ 24 = 75 − = 49
= = = = =
97 − = 22 − =
− − − + +
44 − = + 25 = 35
= = = = =
− 41 = + 35 =
+ 39 = − 26 =
− − − + +
16 + 17 = − = 26
= = = = =
+ 22 = 47 + = 80
+ − + − −
30 − = 20 + =
= = = = =
55 + = − 20 = 47
36 + = − 21 = 63
− − − + +
+ 27 = − 22 =
= = = = =
20 + 21 = + = 84
+ − + − −
− 11 = 31 + = 43
= = = = =
62 + = 72 − =
2009 neoparaiso.com/imprimir Versión 2009-06-15
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■ 13.a. Cuadrículas de suma y resta (addition and subtraction grids)
21 + = 94 − =
− − − + +
11 + = − 16 = 32
= = = = =
+ 36 = + 48 =
+ − + + −
67 − 18 = − = 48
= = = = =
+ 18 = 95 − = 46
+ 73 = 88 − = 40
− − − − +
3 + = 47 + =
= = = = =
12 + = + 47 = 88
+ − + − −
− 16 = + 28 =
= = = = =
47 + 13 = − = 41
20 + 45 = − = 38
− − − − +
+ 12 = 16 + = 27
= = = = =
16 + = 49 + =
+ − + − −
32 − = + 3 = 16
= = = = =
+ 14 = − 13 =
+ 66 = − 21 =
− − − + +
13 + 27 = − = 21
= = = = =
+ 39 = 46 + = 86
+ − + + −
59 − = 42 − =
= = = = =
66 + = − 42 = 46
50 + = − 54 = 22
+ + − − −
+ 20 = − 36 =
= = = = =
76 − 46 = − = 12
− − − + +
− 31 = 18 + = 32
= = = = =
27 − = 12 + =
52 + = 73 − =
+ + − + −
21 + = + 10 = 48
= = = = =
− 38 = − 13 =
− − − + +
40 − 27 = + = 23
= = = = =
− 11 = 22 + = 45
2009 neoparaiso.com/imprimir Versión 2009-06-15
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■ 13.b. Cuadrículas de suma y resta (addition and subtraction grids)
+ 73 = 94 − = 62
− − − + +
11 + = 48 − =
= = = = =
10 + = + 48 = 94
+ − + + −
− 18 = − 1 =
= = = = =
77 + 18 = − = 46
15 + 73 = − = 40
− − − − +
+ 44 = 47 + = 48
= = = = =
12 + = 41 + =
+ − + − −
35 − = + 28 = 47
= = = = =
+ 13 = − 19 =
+ 45 = − 27 =
− − − − +
4 + 12 = + = 27
= = = = =
+ 33 = 49 + = 65
+ − + − −
32 − = 13 + =
= = = = =
48 + = − 13 = 49
20 + = − 21 = 65
− − − + +
+ 27 = − 19 =
= = = = =
7 + 39 = + = 86
+ − + + −
− 17 = 42 − = 40
= = = = =
66 + = 88 − =
50 + = 76 − =
+ + − − −
26 + = − 36 = 10
= = = = =
− 46 = − 18 =
− − − + +
49 − 31 = + = 32
= = = = =
− 15 = 12 + = 44
+ 21 = 73 − = 70
+ + − + −
21 + = 38 + =
= = = = =
73 − = − 13 = 22
− − − + +
− 27 = + 10 =
= = = = =
33 − 11 = + = 45
2009 neoparaiso.com/imprimir Versión 2009-06-15