Adding and Subtracting Rational Numbers

Riley drank 4/5 quart of iced tea and her friend drank 0.3 quart. How much more of a quart of ice tea did Riley drink than her friend?

• 1/5

• 1/2

• 1/3

• 1/4

Hudson has a spoon that is 1/2 foot long. He has a fork that is 0.6 foot long. How much longer is the fork than the spoon?

• 0/12

• 1/6

• 1/5

• 1/10

Serena drank nine and six tenths ounces of juice yesterday. Four and seventy-five hundredths ounces of the juice were apple juice. The rest were orange juice. How many ounces of orange juice did Serena drink yesterday?

• 4.31

• 4.65

• 4.85

• 5.525

The regular price of a calculator is $12.30. Warren had a coupon for the calculator and so he paid $0.75 less than the regular price. He also bought a pad of paper for $1.48. What is the total amount Warren paid for these two items?

• $13.03

• $14.03

• $14.53

• $13.83

Mrs. Tate was mailing three Christmas packages to her relatives who are out of town for a total of $25.95.

• She paid $7.18 to mail the first package.
• She paid $5.69 to mail the second package.

How much did Mrs. Tate pay to mail the third package?

• $12.87

• $13.08

• $13.13

• $13.97

What must you have to add and subtract fractions?

• Common numerators
• Different numerators
• Different denominators
• Common denominators

What is the least common denominator for 3 and 4?

• 6
• 4
• 3
• 12

Mikela uses 1 1/6 cups of rye flour and 3/4 cups of wheat flour to make bread.  
How much flour does Mikela use in all?

• 1 11/12 cups
• 1 3/4 cups
• 1 2/5 cups
• 2 cups

solve

• 1 1/2

• 2 4/9

• 1 5/9

• not here

Marie needs 2 ¹/₄ yards of fabric/ She already has 1 ³/₈ yards. How many more yards of fabric does she need?

• ¹/₈ yard

• ³/₄ yard

• ⁷/₈ yard

• 1 ⁷/₈ yards