Mental math tricks – part 2

36 x 25 = 900     480 x 25 =12,000    924 x 2.5 = 2,310

Can you see any tricks for doing these calculations in your head?

The activity: ImpressYourParents-part2.pdf

CCSS: MP6, MP7, MP8, 4.NBT.B, 5.NBT

An editable Word docx, solutions/hints, and a PowerPoint form of this activity are available to members.

ImpressYourParents-part2.docx    ImpressYourParents-part2-hints,solutions.pdf

Multiplying-by-25.pptx


Check out our first mental math activity here ... multiplying by 5, 50, 0.5, etc.

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