Respuesta :

plantsupremacy
u count how many zeros are in each of the problems then u multiply the whole number and add the zeros to the end

example 500 x 400 = 200000 because 5 x 4 is 20 and 500 and 400 have 2 zeros each so u add 4 zeros to 20 so 200000
dolo423af
because you do 5 times 4 just like you would with the first one and just bring the zeros down from the 500 and 400

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