Addition and Subtraction Concepts 77
Rigorous Problem Solving with the Concept of
Fact Families 1
In the Funny Bunny game, players try to name the number
hidden on one of the bunny’s ears and the four facts in the
fact family.
Part A
Which fact belongs to the fact family represented above?
o 8 + 12 = 21
o 8 – 12 = 4
o 4 + 8 = 12
o 21 – 8 = 12
o 4 + 12 = 8
Part B
List the four facts in a different fact family that has the
sum of 12.
© 2016, Math Intervention: Grades 3–5, Jennifer Taylor-Cox, Routledge