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

User Ensc
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[tex] Estimate: 40x60 6x4 = 24 0x0=0 60x40= 2,400
User Chendriksen
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Multiply the first number , such as 4 and 6, and then add however many 0's there are

User Dpavlin
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