3-2 Addition with Regrouping

Last updated almost 4 years ago
3 questions
2

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


4

Look at this addition problem again. WHY do we need to regroup?https://talkandcomment.com/p/5b752cb70ce3b552f979ade9 (voice note)


4

Please add to find the sum. https://talkandcomment.com/p/0df7144bbb12724fe10f1856 (voice note)