Let’s solve each problem step by step.
We’re multiplying a fraction by a whole number, and the result is another fraction with the same denominator. That means we only need to figure out what whole number multiplies the numerator to give the new numerator — because the denominator stays the same.
---
Problem 1:
5/2 × ? = 25/2
→ We ask: What times 5 gives 25? → 5 × 5 = 25
✔ So the missing number is
5
---
Problem 2:
2/11 × ? = 18/11
→ What times 2 gives 18? → 2 × 9 = 18
✔ So the missing number is
9
---
Problem 3:
1/5 × ? = 3/5
→ What times 1 gives 3? → 1 × 3 = 3
✔ So the missing number is
3
---
Problem 4:
13/4 × ? = 91/4
→ What times 13 gives 91? Let’s divide: 91 ÷ 13 = 7
Check: 13 × 7 = 91
✔
✔ So the missing number is
7
---
Problem 5:
7/2 × ? = 49/2
→ What times 7 gives 49? → 7 × 7 = 49
✔ So the missing number is
7
---
Problem 6:
6/7 × ? = 54/7
→ What times 6 gives 54? → 6 × 9 = 54
✔ So the missing number is
9
---
Final Answer:
5, 9, 3, 7, 7, 9
Parent Tip: Review the logic above to help your child master the concept of multiplying fractions by whole numbers worksheet 4th grade.
