Multiplying and Dividing Fractions — Answer Key
Part A: Multiple Choice
Circle the best answer for each question.
1. A recipe needs 34 cup flour. You make 23 of the recipe. How much flour?
A) 12 cup
B) 67 cup
C) 512 cup
D) 14 cup
34 × 23 = 612 = 12 cup.
2. A board is 56 yard. Cut into 13-yard pieces. How many pieces?
A) 518
B) 52
C) 212
D) 123
56 ÷ 13 = 56 × 31 = 156 = 52 = 212 pieces.
3. A garden is 34 m wide and 25 m long. What is its area?
A) 310 sq m
B) 720 sq m
C) 59 sq m
D) 1110 sq m
Area = 34 × 25 = 620 = 310 square meters.
4. Sam has 45 of a pizza, shared equally among 4 friends. Each friend gets:
A) 45
B) 15
C) 49
D) 14
45 ÷ 4 = 45 × 14 = 420 = 15.
Part B: Fill in the Blank
Write the correct answer on each line.
1. A ribbon is 78 yard. Maria uses 12 of it. She uses 716 yard.
78 × 12 = 716 yard.
2. A painter covers 23 of a wall per hour. In 34 hour he covers 12 of the wall.
23 × 34 = 612 = 12 of the wall.
3. A bag holds 56 kg of rice. Filled 35 full, it holds 12 kg.
56 × 35 = 1530 = 12 kg.
4. A rope is 910 meter. Cut into 310-meter pieces, you get 3 pieces.
910 ÷ 310 = 910 × 103 = 9030 = 3 pieces.
5. A tank holds 34 gallon. Filled 45 full, it contains 35 gallon.
34 × 45 = 1220 = 35 gallon.