Adding and Subtracting Within 1000

15-5=

• 9

• 10

• 11

• 12

Check two boxes that give the same answer.

• 7+4

• 16-7

• 20-9

• 6+6

Complete the equation.

17 - ? = 8 + 2

• 5

• 6

• 7

• 8

Complete the equation.

? - 6 = 12

• 6

• 12

• 18

• 24

Select true or false.

8 + 9 = 8 + 8 + 1

• True

• False

What is the sum of their base ten blocks?

• 233

• 121

• 345

• 145

What is the difference between the amount Ellie and Leo have?

• 231

• 537

• 352

• 111

11+25+13+26=

• 75

• 52

• 67

• 81

The same number is missing from both. What is the missing number?

12+__=36

36-__-12

• 15

• 32

• 24

• 27

Pick two choices that match the information found in the bar model.

• 75-54=21

• 21+54=75

• 75+21=54

• 54-21=75