LShort LShort
  • 08-12-2014
  • Mathematics
Answered

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



Answer :

galiszewskis
galiszewskis galiszewskis
  • 08-12-2014
Multiply the first number , such as 4 and 6, and then add however many 0's there are

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Аноним Аноним
  • 08-12-2014
[tex] Estimate: 40x60 6x4 = 24 0x0=0 60x40= 2,400
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