Dedra446 Dedra446
  • 30-01-2015
  • Mathematics
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How can you use 4s fact to find 7x8? Give the product in your explanation.

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apologiabiology
apologiabiology apologiabiology
  • 30-01-2015
so 4's facts

we know that 4 times 2=8 and the associative property of multiplication says
a(bc)=(ab)c

so 7(8) (means 7 times 8) means 7((4)(2)) and associative say we can group them and say (7)(4)(2) so (4)((7)(2)) or 4(14) and 4 times 14=56

7 times 8=56
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