Question

A. One fact in a fact family is . What are the other three members of this fact family?
b. Draw four number line models to illustrate each of the facts in part

Answer 1

Answer:

A fact family is a group of math facts using the same numbers.  In the case of addition/subtraction, you use three numbers and get four facts.  For example, you can form a fact family using the three numbers 10, 2, and 12: 10 + 2 = 12, 2 + 10 = 12,  12 − 10 = 2, and 12 − 2 = 10.