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  • 12-08-2020
  • Mathematics
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Dr. Green has to multiply the weight of the team's bug spray bottles, 7 x 90 grams. To solve this, he writes out the equation 7 x 9 x 10. Why does this strategy work?

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FaDaReAdEoLa
FaDaReAdEoLa FaDaReAdEoLa
  • 12-08-2020

Because 9 × 10 equals 90

Then 7×90=7×9×10

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