Math · Fractions
Multiplying Fractions and Mixed Numbers
Multiply fractions by fractions and whole numbers, find a fraction of a number and reason about product size.
- 🎓 Grade 5
- 🧮 Math
- 📐 5.NF.B.4
- ❓ 21 questions
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What is 2/5 of 15?
- A 13
- B 3
- C 30
- D 6
15 ÷ 5 = 3, then × 2 = 6.
1/2 × 3/4 = ?
- A 3/6
- B 4/6
- C 3/8
- D 4/8
Multiply numerators and denominators: 3/8 = 3/8
2/3 × 3/5 = ?
- A 2/5
- B 10/9
- C 6/8
- D 5/8
Multiply numerators and denominators: 6/15 = 2/5
5/6 × 1/3 = ?
- A 6/9
- B 5/9
- C 5/18
- D 15/6
Multiply numerators and denominators: 5/18 = 5/18
What is 3/4 of 20?
- A 17
- B 5
- C 15
- D 60
20 ÷ 4 = 5, then × 3 = 15.
3/4 × 2/5 = ?
- A 15/8
- B 6/9
- C 3/10
- D 5/9
Multiply numerators and denominators: 6/20 = 3/10
Without multiplying, which is true about 3/4 × 8?
- A It is less than 8.
- B It is less than 3/4.
- C It is more than 8.
- D It equals 8.
Multiplying by a fraction less than 1 makes a smaller product.
Jen has 2/3 of a pizza. She eats 1/2 of it. What fraction of a whole pizza does she eat?
- A 1/6
- B 1/3
- C 1 1/6
- D 3/5
1/2 × 2/3 = 2/6 = 1/3
5/9 × 3/5 = ?
- A 1/3
- B 15/14
- C 8/14
- D 25/27
Multiply numerators and denominators: 15/45 = 1/3
What is 2/3 of 12?
- A 24
- B 10
- C 4
- D 8
12 ÷ 3 = 4, then × 2 = 8.
4/7 × 1/2 = ?
- A 4/9
- B 5/9
- C 2/7
- D 8/7
Multiply numerators and denominators: 4/14 = 2/7
3/8 × 2/3 = ?
- A 6/11
- B 9/16
- C 1/4
- D 5/11
Multiply numerators and denominators: 6/24 = 1/4
1/4 × 4/9 = ?
- A 1/9
- B 9/16
- C 4/13
- D 5/13
Multiply numerators and denominators: 4/36 = 1/9
1/3 × 3/10 = ?
- A 4/13
- B 1/10
- C 3/13
- D 10/9
Multiply numerators and denominators: 3/30 = 1/10
Which product is greater than 5?
- A 5 × 1 1/3
- B 5 × 2/3
- C 5 × 1
- D 5 × 9/10
Multiplying by more than 1 makes the product bigger.
1 1/2 × 2/3 = ?
- A 1
- B 1 1/3
- C 2 1/6
- D 2/3
1 1/2 = 3/2, and 3/2 × 2/3 = 6/6 = 1.
A garden is 3/4 m long and 2/3 m wide. What is its area?
- A 1 5/12 sq m
- B 5/7 sq m
- C 6/7 sq m
- D 1/2 sq m
3/4 × 2/3 = 6/12 = 1/2
2/5 × 5/8 = ?
- A 10/13
- B 1/4
- C 7/13
- D 16/25
Multiply numerators and denominators: 10/40 = 1/4
3/5 × 1/6 = ?
- A 1/10
- B 4/11
- C 18/5
- D 3/11
Multiply numerators and denominators: 3/30 = 1/10
2 1/4 × 4 = ?
- A 2 1/16
- B 8 1/4
- C 9
- D 8 1/16
2 1/4 = 9/4, and 9/4 × 4 = 9.
7/10 × 2/7 = ?
- A 9/17
- B 49/20
- C 14/17
- D 1/5
Multiply numerators and denominators: 14/70 = 1/5
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