Look at Shreya's working in her notebook. Which properties did she use to go from Step 1 to Step 2 (orange curve 1), and from Step 2 to Step 3 (blue curve 2)?

Question

Accepted Answer

Commutative, then associative. Step 1 → Step 2 swaps 37 and 25: the ORDER changes, so it is the commutative property. Step 2 → Step 3 only adds brackets around 4 × 25: the GROUPING changes, so it is the associative property. Then 100 × 37 = 3700.

Look at Shreya's working in her notebook. Which properties did she use to go from Step 1 to Step 2 (orange curve 1), and from Step 2 to Step 3 (blue curve 2)?

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