Column-Row-Diagonal Addition enrichment 4.6
In this addition learning exercise, learners use the nine numbers in squares to add and find a row, column, or diagonal whose three numbers total the given sums. Students solve twelve problems.
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Solve Addition Problems: Using Complements of 10
In a base ten number system, knowing the complements of ten is a huge help when learning addition with larger numbers. The third video is this series models how these special pairs of numbers can be used along with expanded notation to...
5 mins 2nd - 4th Math CCSS: Designed