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Explain how using basic facts can help you find 10 X 20 X 30 X 40 mentally
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Explain how using basic facts can help you find 10 X 20 X 30 X 40 mentally

User James Wright
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You do 4 X 3 X 2 X 1 = 24
Then you count your remaining zeros you have 4 so it would be 24,0000
User Sbrattla
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