Module 1 Assessment

There are 9 ducks swimming along in a line. There are 2 grown-up ducks, and the rest are babies. How many of the ducks are babies?

Jennifer says you can use addition to solve subtraction. She says to solve 9 - 6 = __, just add 9 + 6. True or False

• True

• False

Jeremy is confused about this problem: (a)   = 10 - 8. What is the value of (b)   ?

• 1
• 2
• 3
• 4

At the park, there are 6 friends playing baseball. Some more friends come. Now, there are 10 friends playing. How many friends come to play with the first 6 friends? Draw a picture and number sentence to solve.

Choose the correct addition and subtraction sentences that match.

• 5 + 3 = 8 and 8 - 3 = 5

• 6 + 2 = 9 and 9 - 2 = 6

• 4 + 4 = 9 and 9 - 4 = 4

• 7 + 1 = 8 and 8 - 1 = 7

Match the following number sentences with their correct sums.

• 4 + 5

• 5 + 3

• 4 + 7

• 5 + 5

• 5 + 5

• 8 + 3

• 2 + 6

• 3 + 5