Use of compatible numbers makes computation easier because children:
A)work with numbers less than 100.
B)look for numbers with sums such as 10, 100, or 1,000.
C)the sum of compatible numbers is always even.
D)the product of compatible numbers ends in 5 or 0.

Question

Quizplus · Accepted Answer

Using compatible numbers involves selecting numbers that are easy to work with and closely related to the original numbers being multiplied, divided, added, or subtracted. One common strategy is to look for numbers with sums such as 10, 100, or 1,000. For example, instead of multiplying 23 by 17, a child might round them to 20 and 15, which are more compatible numbers, and then multiply 2 times 1 and add two zeros to get 200. Then, they can multiply 3 times 5 to get 15 and add a zero to get 150. Finally, they can add the two partial products to get 350, which is very close to the actual product of 391.

Use of Compatible Numbers Makes Computation Easier Because Children