Stage 2 · The Four Operations & Estimation

2.5.1 Multiply and Divide Before You Add and Subtract

2.5 Order of Operations & Mental Estimation

Point 1 of 6

2.5.1 Multiply and Divide Before You Add and Subtract

Core idea

Buying 3 pens at $2 plus a $1 notebook, you work out the pen cost first — multiplication and division go first.

Module goal. Establish the order of operations with parentheses, and build practical intuition for mental math and estimation.
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