Respuesta :

you would know 4×5=20 so just add 2 more zeroes cause there is a zero in 40 and in 50

hope this is what you're looking for and made sense
animalsgocrazy
All you have to do to find 40*50 in your mind, is multiply 4 and 5. Then you will have to add the two 0s at the end. So it will go like 4*5=20+0+0=2,000

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