9-29 Addition Using Place Value

Last updated almost 4 years ago

3 Nsɛmmisa

Look at the addition problem. Do we need to regroup to solve correctly? https://talkandcomment.com/p/c4236c0b8173829982721083 (voice note)

Yes

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When adding the ONES, any number larger than 9 must be regrouped.https://talkandcomment.com/p/6c1df83510cc7bb55e95a4d4 (voice note)

When adding the TENS, any number less than 9 must be regrouped. https://talkandcomment.com/p/b16c13bec86922f2f5bdade3 (voice note)

The number likes the tens place better so we move it to make it happy. https://talkandcomment.com/p/6280b32ed17db274bb297cae (voice note)

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A. 21

B. 37

C. 47

D. 41

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