Explain how using basic facts can help you find 10x20x30x40 mentally

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Master Noob · Answer 1 · 2019-09-21T12:37:47+0000

You can take away the 0's so it would be 1x2x3x4 which is 24 then when you get 24 add the 4 0's you took away before so the answer is 240000