Teaching How To Decompose Multiplication Numbers. Web this video shows a mental math strategy for multiplying by breaking numbers into separate pieces. 7 different ways to teach decomposing numbers.

Web this video shows a mental math strategy for multiplying by breaking numbers into separate pieces. The number 7 can be decomposed into 7 and 0, 1 and 6, 2 and 5, or 3 and 4. To subtract, one must take.