Adding and Subtracting Whole Numbers and Mixed Numbers Like Denominators

When adding or subtracting rational numbers, what must you have?

• Common Numerator

• Quick Answering Skills

• Common Numbers

• Common Denominators

USE SCRATCH PAPER AND SOLVE THIS WORD PROBLEM:

The classroom made cookies. They used 1 1/4 cups of white flour for the chocolate chip cookies. They used 2 1/3 cups of flour for peanut butter cookis. How much flour did they use in total?

• 3 2/7 cups

• 3 7/12 cups

• 1 1/12 cups

• 1 2/7 cups

Add the mixed numbers.

• 6 7/10

• 7 2/10

• 4 1/10

• 10 6/7

• A
• B
• C
• D

Add the mixed numbers. HINT: Reduce or simplify your answer.

• 18 4/8

• 16 6/8

• 17 3/4

• 1 4/8

Add the fractions.

• 3/10

• 6/10

• 9/10

• 1/10

Add the fractions. Pick the answers below.

• 12/12

• 2/12

• 3/12

• 1 whole

Subtract the fractions.

• 3/7

• 9/7

• 1 whole

• 3/14

Subtract the fractions. HINT: Reduce or simplify your answer.

• 3 4/8

• 2 4/8

• 2 1/2

• 10 1/2