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Anna35 [415]
2 years ago
5

Estimate. Then record the product. 640×3=

Mathematics
1 answer:
ExtremeBDS [4]2 years ago
4 0
You could estimate by doing 600x3=1800
(becasuse of the 0's in 600 it is easier to do 6*3=18 and then add two 0's to the end 1800)
then you simply multiple 640x3=1920
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