Unit 4 Addition

Missing Addends

100

1 + ____ = 5

4

200

___ + 3 = 5

2

300

____ + 6 = 8

2

400

7 = ____ + 2

5

500

10 = 4 + ____

6

Word Problems

100

Sam has 5 crayons. His teacher gives him 5 more. How many crayons does Sam have now? Write an equation to show how to solve the problem. 

5 + 5 = 10

200

Ben makes 4 cookies. Pat makes 8 cookies. How many cookies do they make in all? Write an equation to show how to solve the problem. 

4 + 8 = 12

300

Tess eats 3 chips. Jeff eats 12 chips. How many chips do Tess and Jess eat? Write an equation to show how to solve the problem. 

3 + 12 = 15

400

There are 5 frogs on a log. Some more frogs get on the log. Now there are 9 frogs on the log. How many frogs got on the log? Write an equation to show how to solve the problem. 

5 + ___ = 9

5 + 4 = 9

500

Kim has some cookies. She makes 5 more. Now she has 8 cookies. How many cookies did Kim make? Write an equation to show how to solve the problem. 

___ + 5 = 8

3 + 5 = 8

True/False

100

7 = 3 + 3

False

200

10 = 7 + 3

True

300

4 + 5 = 9

True

400

Jack has 5 green shirts and 3 red shirts. Cam has 4 green shirts and 4 red shirts. Jack says he has more shirts than Cam. Is this true or false? How do you know? 

It is false because Jack and Cam have the same number of shirts. Jack has 5 + 3 = 8 and Cam has 4 + 4 = 8. 

500

Ted has 4 toy cars and 6 toy trucks. Brad has 3 toy cars and 5 toy trucks. Ted says he has more toys than Brad. Is this true or false? How do you know? 

It is true because Ted has 4 + 6 = 10 toys and Brad has 3 + 5 = 8 toys. 10 is more than 8 so Ted has more. 

Make Ten

100

1 + ____ = 10

9

200

____ + 4 = 10

6

300

Jan has 7 cups of water. She needs 10 cups of water. How many more cups of water does Jan need to have 10? 

3

400

Show how to make a ten to solve this equation using a number bond. Write the sum.

7 + 8 = ____

Answers may vary. 

500

Show how to make a ten to solve this equation using a number bond. Write the sum. 

5 + 6 = ____

Answers may vary. 

Vocabulary

100

The symbol you use to show that you are adding two numbers together is called the ______________. 

plus sign

200

The ____________ is a symbol that means the same as. 

equal sign

300

4 + 3 = 7 is an example of an ________________. 

equation

400

_________ are the numbers you add together in an equation. 

Addends

500

The ________ is the total when you add two numbers together. 

sum