expanded is longer standerd is just regular partial products to find like standerd means simple your level. expanded means longer to stretch, or 2 make big.
391
YES (i think)
24 times 21= in algorithm standard
I'm not entirely sure I know what you mean by "expanded algorithm" but here is a guess: 31 * 19 = (13 * 9)+(31 * 10) = 117 + 310 = 427
1.1
The expanded algorithm makes use of the partial products to fully explain place value in multiplication. The standard algorithm which is most commonly used is considered superior and less confusing.
They are different because standard algorithm is more common then the expanded algorithm
Yes
391
1363
YES (i think)
24 times 21= in algorithm standard
I'm not entirely sure I know what you mean by "expanded algorithm" but here is a guess: 31 * 19 = (13 * 9)+(31 * 10) = 117 + 310 = 427
Becise
The definition of "standard algorithm" is that it is a mathematical method used to solve problems such as addition, substraction, division, and multiplication.
1.1
Yes.