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How can you use mental math to multiply 800 x 5?

8*5=40
to get 4000

Just multiply 8 and 5 you will get 40 when you add two zeros you get 4000.Check your answer on paper, If you wish to

How can you use mental math to multiply 800 times 5

8x5=40
and then add two zeroes to the end of 40 =4000

v_v
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8x5=40
and then add two zeroes to the end of 40 =4000

v_v

My name is Jeff.

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