4 + 9 =

12 - 7 =

7 + _____ = 12

6 + 9 =

15 - 9 =

_____ - 5 = 4

What is one way to make 14? (add)

What is one way to make 9? (subtract)

Which fact is a related fact?
6 + 9 = 15
9 + 6 = 15
15 - 6 = 9
?

A. 9 - 6 = 3
B. 15 - 9 = 6
C. 10 + 5 = 15

Marta has 7 flowers. A friend gives her 3 more flowers. How many flowers does Marta have now?

Chet has 11 shells. He gives away 6 shells. How many does he have left?

Look at the facts. Are they related facts? Choose yes or no.
7 + 4 = 11 11 - 7 = 4

Tina has a book. She reads 10 pages. Then she reads 4 more pages. How many pages did she read in all?

There are 8 cats in a basket. 3 cats jump out and then 1 more follows. How many cats are left?

Which is the unknown number in these related facts?
______ + 3 = 11
11 - 3 = ______
3 + ______ = 11