Question

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

Answer 1

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