Word problems problem type

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TYPES OF ADDITION & SUBTRACTION

WORD PROBLEMS

PROBLEM TYPE

Result Unknown

Laina had four dolls. She bought two more. How many dolls does she have now?

4 + 2 =

Change Unknown

Laina had four dolls. She bought some more dolls. Now she has six dolls. How many dolls did Laina buy?
4 + = 6

Initial Quantity Unknown

Laina had some dolls. She bought two more dolls. Now she has six dolls. How many dolls did Laina have before she bought some more?

+ 2 = 6

Separate

Result Unknown

Rodney had ten cookies. He ate three cookies. How many cookies does Rodney have left?

10 – 3 =

Change Unknown

Rodney had ten cookies. He ate some of the cookies. Now he has seven cookies left. How many cookies did Rodney eat?

10 - = 7

Initial Quantity Unknown

Rodney had some cookies. He ate three cookies. Now he has seven cookies left. How many cookies did Rodney have to start with?

- 3 = 7

Part-Part-Whole

Whole Unknown

Five boys and three girls are on the basketball team. How many children are on the basketball team?

5 + 3 =

Part Unknown

Eight children are on the basketball team. Five are boys and the rest are girls. How many girls are on the basketball team?

5 + = 8

Compare

Difference Unknown

Ahmed has two brothers. Christine has three brothers. Christine has how many more brothers than Ahmed?
3 – 2 = or 2 + = 3

Larger Quantity Unknown

Ahmed has two brothers. Christine has one more brother than Ahmed. How many brothers does Christine have?
2 + 1 =

Smaller Quantity Unknown

Christine has one more brother than Ahmed. Christine has three brothers. How many brothers does Ahmed have?
+ 1 = 3 or 3 - = 1

[Adapted from: Math Matters, Grades K-6, Math Solutions Publications]

CDGoals\Bk 3-5\Chp9\Types of Add & Sub Word Problems.doc

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