anthonybess141 anthonybess141

21-10-2017
Mathematics

contestada

explain how to find 40 multiply by 50 using mental math.

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Eveboardman Eveboardman

21-10-2017

Take 4 and multiply it by 5 (which you should be able to do in your head) and then add the two zeros back in so:
4•5= 20
20+0+0=
2000

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