s1 (1.2) l 3 decimals.notebook september 24, 2015 - weebly · 2018. 9. 9. · s1 (1.2) l 3...
TRANSCRIPT
S1 (1.2) L 3 Decimals.notebook September 24, 2015
Daily Practice 3.11.2014
Q1. Round 88.94 to the nearest unit
Q2. 4 x -7
Q3. -5 - (-6)
Q4. 20 x 40
Q5. 29.88 + 36.9
Today we will be learning how to add and subtract decimals.
Homework Due Wednesday!
Adding and subtracting decimals 3.11.2014
Always ensure each digit has it's correct place value and the number that has the greater value is on top when adding.
Examples:
(a) 22.4 + 3.677 (b) 30 - 5.89 (c) 28.1143 - 7
Adding and subtracting decimals 3.11.2014Daily Practice 5.11.2014
Q1. Find 25% of 70
Q2. Round 81.76 to the nearest unit
Q3. Find 4/7 of 2849
Q4. -9 x 6
Q5. (3 x 2) ÷ -2
S1 (1.2) L 3 Decimals.notebook September 24, 2015
Today we will be learning how to multiply decimals.
Multiplying Decimals
S1 (1.2) L 3 Decimals.notebook September 24, 2015
Daily Practice 6.11.14
Q1. 4522 x 90
Q2. Round 8172.5 to the nearest unit
Q3. If 2 x k - 1 = 17, what is k?
Q4. -36 ÷ -6
Q5. Calculate the perimeter
5.5cm
Today we will be learning how to multiply trickier decimals
and divide with decimals.
0.4 0.006 x 0.008
Multiplying trickier Decimals 6.11.2014
0.026 x 0.7
S1 (1.2) L 3 Decimals.notebook September 24, 2015
Daily Practice 10.11.14
Q1.
Find 50% of 26Q2. 32.77 + 1.018
Q4. Write down a prime
number between 40 and 50
Q3. 3 x (-4) x (-5)
Q5) 0.2 x 0.03 Today we will be learning to divide with decimals.
Dividing with Decimals Division Questions
Q1) 441 ÷ 2
Q2) 3.305 ÷ 5
Q3) 2.97 ÷ 3
Q4) 40.18 ÷ 5
Q5) 303.2 ÷ 2
Q6) 673.2 ÷ 9
Q7) 10.2 ÷ 6
Q8) 101.5 ÷ 7
Q9) 361.6 ÷ 8
Q10) 54.96 ÷ 8
Q11) 8.64 ÷ 8
Q12) 20.45 ÷ 4
Q13) 250.56 ÷ 2
Q14) 1.0812 ÷ 4
Q15) 5.49 ÷ 90
Division Questions
Q1) 441 ÷ 2
Q2) 3.305 ÷ 5
Q3) 2.97 ÷ 3
Q4) 40.18 ÷ 5
Q5) 303.2 ÷ 2
Q6) 673.2 ÷ 9
Q7) 10.2 ÷ 6
Q8) 101.5 ÷ 7
Q9) 361.6 ÷ 8
Q10) 54.96 ÷ 8
Q11) 8.64 ÷ 8
Q12) 20.45 ÷ 4
Q13) 250.56 ÷ 2
Q14) 1.0812 ÷ 4
Q15) 5.49 ÷ 90
2
73
4
6
9
S1 (1.2) L 3 Decimals.notebook September 24, 2015
Daily Practice 12.11.2014
Q1. 4 x 5 - 2 + 3
Q2. Find 3/7 of 2149
Q3. 17.24 + 1.005
Q4. 0.008 x 0.9
Q5. -5 + (-15)
Today we will be learning to divide decimals
by decimals.
÷ 0.9 (c) 0.48 ÷ 0.006
Decimals dividing by decimals 12.11.14
To divide a number by a decimal, make the decimal a whole number first by multiplying both numbers by a multiple of 10.
Daily Practice 13.11.14
Q1. Round 3569 to the nearest hundred
Q2. Find 25% of 60
Q3. 6 - 3 x 5
Q4. 21.45 x 60 Q5. 0.16 ÷ 0.02
Today we will be dividing decimals by decimals
and reading decimal scales.
S1 (1.2) L 3 Decimals.notebook September 24, 2015
Trickier decimal division
http://www.mathworksheets4kids.com
Trickier decimal division
(i) 0.428 ÷ 0.002 (j) 0.036 ÷ 0.0004
(k) 0.12 ÷ 0.003 (l) 0.2466 ÷ 0.06
(m) 0.065 ÷ 0.5 (n) 0.459 ÷ 0.0009
(o) 0.3224 ÷ 0.8 (p) 0.0497 ÷ 0.07
Decimal Scales Decimal Scales
Decimal Scales Decimal Scales
S1 (1.2) L 3 Decimals.notebook September 24, 2015
12 13
1.5 2
2.5 2.6
0 0.5
(a) (b)
(c) (d)
3 Daily Practice 19.11.14
20 Questions Mental Maths
Today we will be going over the homework and
learning to round to decimal places.
S1 (1.2) L 3 Decimals.notebook September 24, 2015
Daily Practice 20.11.14
Q1. Write two hundred thousand and eighty three in digits
Q2. 6 ‐ 5 x 4
Q3. ‐4 x (‐8)
Q4. 6 ‐ (‐1)
Q5) 0.56 ÷ 0.007
Today we will be learning about rounding to the nearest
unit & decimal places.
Rounding Decimals
Rounding a number to the nearest unit (nearest whole number).
H T U . t h th
Examples: Round to the nearest unit
(a) 3.4
(b) 75.182
3.53 4
Round each of these to the nearest unit
(i) 2.6 (ii) 3.22 (iii) 7.95 (iv) 14.715
(v) 18.225 (vi) 157.63 (vii) 44.8177
S1 (1.2) L 3 Decimals.notebook September 24, 2015
Rounding to 1 decimal place
Rounding a number to 1 d.p. means to leave 1 digit after the decimal
point.
Examples: Round these to 1 decimal place
(a) 3.24
(b) 1.855
(c) 2411.299
(d) 101.99
Rounding Decimals
Round each of the following to the 1 decimal place
(a) 22.91
(b) 43.24
(c) 2.87
(d) 19.9132
(e) 20.473
(f) 38.129
(g) 43.456
(h) 9.921
(i) 2035.10987 (j) 2.44138 (k) 10.8991
Round these to 2 decimal places
(c) 41.256 (d) 38.1622
2 decimal places means to leave 2 digits after the decimal point Daily Practice 26.11.14
20 Questions Mental Maths