09-12-2014
Mathematics

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what shortcut can you use to multiply tens by tens, such as 40x60"

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galiszewskis galiszewskis

09-12-2014

Multiply the first number , such as 4 and 6, and then add however many 0's there are

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Аноним Аноним

09-12-2014

[tex] Estimate: 40x60 6x4 = 24 0x0=0 60x40= 2,400

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