Text Box: 10 x 4 = 40, then we did that again. 40 + 40 = 80. 4 x 7 = 28 Then we added those two together, which equals 108  

Children’s Strategies for  Multiplication

Tatia
Text Box: NOTE: This chunking strategy is also very common, even though it is neither efficient or sophisticated. One reason for its use is that students are taught to think in terms of groups of ten. This is not an efficient strategy because if this was 60 rather than 20, Tatia would have to take 10 x 4 six times, rather than just twice.

Drag the top and left points to model Tatia's solution.

 

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