med math ii day3
TRANSCRIPT
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เรี�ยนรี��วิธี�การีบวิกเลขและลบเลขLearn how to plus and minus the number - Day 3
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Sing a Song
น�กเรี�ยนและคุ�ณคุรี�รี�องเพล พรี�อมก�น
Teacher and students will sing a song about plus and minus
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วิธี�การีหาคุ�าตอบ
37 – 5 = ?37 – 5 = 30 + 7 – 5
= 30 + 2 = 32
How to find the answer?
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ลองอ�านและบวิกเลขลบเลขพรี�อมก�น37+ 10 - 7 = 4032 + 12 - 5 = 3922 + 13 - 8 = 27
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วิธี�การีแก�โจทย"ปั$ญหาหล�กสิบ หล�กหน�วิย
3 7+
0 4
7
1
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วิธี�การีแก�โจทย"ปั$ญหาหล�กสิบ หล�กหน�วิย
4 7-
7 4
0
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วิธี�การีแก�โจทย"ปั$ญหาหล�กสิบ หล�กหน�วิย
3 2+
2 4
4
1
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วิธี�การีแก�โจทย"ปั$ญหาหล�กสิบ หล�กหน�วิย
4 4-
5 3
9
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วิธี�การีแก�โจทย"ปั$ญหาหล�กสิบ หล�กหน�วิย
2 2+
3 3
5
1
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วิธี�การีแก�โจทย"ปั$ญหาหล�กสิบ หล�กหน�วิย
3 5-
8 2
7
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ตอบคุ�าถาม
A.33B.44C.55D.66
42 + 31 - 7 = ?
clock
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ตอบคุ�าถาม
A.25B.24C.23D.22
19 + 12 - 6 = ?
clock
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จ�บคุ�� ( Match )
23 + 5●25 - 12 ●23 + 9●46 + 20 ●21 - 13 ●
● 30 - 2● 17 - 9● 80 - 14● 11 + 2● 50 - 18
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แบบฝึ)กห�ด (Exercise)
A. 4B. 3C. 2D. 1
16 + ? = 20
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แบบฝึ)กห�ด (Exercise)
A. 7B. 17C. 27D. 37
33+? = 50
(anonymous)
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แบบฝึ)กห�ด (Exercise)
A. 2B. 3C. 4D. 5
18-? = 13
clock
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แบบฝึ)กห�ด (Exercise)
A. 5B.15C.16D.17
28-? = 13
clock
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แบบฝึ)กห�ด (Exercise)
A.6B. 7C. 8D. 9
29 - ? + 1 = 21
(anonymous)
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แบบฝึ)กห�ด (Exercise)
A. 7B. 6C. 5D. 4
56 +? - 3 =60
(anonymous)
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calculator
5 + 51 – 32 = ?
99 - 88 + 9 = ?
16 + 44 - 1 = ?
19 + 21 - 10 = ?
85 – 15 – 25 = ?
32 – 2 + 10 = ?
98 – 8 + 5 = ?
14 + 16 - 9 = ?
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What’s the score?
score