Glendita Glendita

01-12-2016
Mathematics

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Suppose you had to find 4x57. How are expanded algorithm and standard algorithm alike? How are they different?

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Аноним Аноним

01-12-2016

i guess 4 x 57 = 4(50 + 7) = 200 + 28 = 228.
The other is to say 57 x 4:
7x4 = 28 write down the 8 and carry the 2.
5x4 = 20, add 2 to get 22 and write 22.
Answer is 228.

_ 57
_ x4
------
228

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