Math 4 · Unit 13: Addition and subtraction · Cambridge Primary Maths Stage 4

Questions

1. 1. Worked example: find the missing fraction. 3/11 + 1/11 + ☐ = 14/11

   • 14/11
   • 10/11
   • 4/11
   • 11/11
   Check

2. 2. Jamila has cycled 3/4 of the way to the gym. What fraction of the distance does she still have to go?

   • 1/4
   • 3/4
   • 4/4
   • 1/3
   Check

3. 3. Draw lines between two fractions that total 1. Find all the pairs that total 1.

   • 2/5
   • 2/8
   • 1/4
   • 1/5
   • 1/6

   • 6/8
   • 3/4
   • 4/5
   • 5/6
   • 3/5
   Check

4. 4. Work out 5/6 + 3/6.

   • 8/6
   • 2/6
   • 15/6
   • 8/12
   Check

5. 5. Work out 7/8 − 3/8.

   • 4/16
   • 4/0
   • 4/8
   • 10/8
   Check

6. 6. Work out 11/12 − 3/12.

   • 8/0
   • 14/12
   • 8/12
   • 8/24
   Check

7. 7. Work out 7/12 − 5/12.

   • 2/0
   • 2/24
   • 12/12
   • 2/12
   Check

8. 8. Write the missing number: 3/8 + ☐ = 9/8

   • 6/8
   • 6/16
   • 12/8
   • 3/8
   Check

9. 9. Write the missing number: 6/8 − ☐ = 1/8

   • 7/8
   • 5/0
   • 5/8
   • 1/8
   Check

10. 10. Find the missing fraction: 3/8 + 1/8 + ☐ = 7/8

    • 4/8
    • 7/8
    • 11/8
    • 3/8
    Check

11. 11. Write the missing numbers. Row 1: 2/7 + 6/7, 2/3 + 2/3, 4/5 − 1/5, 9/10 − 1/10. Row 2: 3/4 + 3/4, 7/8 + 6/8, 6/9 − 3/9, 4/9 − 1/9. Row 3: 5/9 + 7/9, 3/6 + 4/6, 5/7 − 2/7, 7/8 − 2/8. Which list gives the answers in order?

    • 8/14, 4/6, 3/5, 8/10, 6/8, 13/16, 3/9, 3/9, 12/18, 7/12, 3/7, 5/8
    • 8/7, 4/3, 5/5, 10/10, 6/4, 1/8, 3/9, 5/9, 12/9, 1/6, 7/7, 9/8
    • 4/7, 0/3, 3/0, 8/20, 6/4, 13/8, 9/9, 3/0, 2/9, 7/6, 3/14, 9/8
    • 8/7, 4/3, 3/5, 8/10, 6/4, 13/8, 3/9, 3/9, 12/9, 7/6, 3/7, 5/8
    Check

12. 12. Write the missing fraction: 3/5 + 4/5 = ☐

    • 7/5
    • 1/5
    • 7/10
    • 12/5
    Check

13. 13. Draw lines between two fractions that total 10/9. Find all the pairs that total 10/9.

    • 2/9
    • 3/9
    • 4/9
    • 5/9

    • 7/9
    • 6/9
    • 5/9
    • 8/9
    Check

14. 14. Which of these is a way to solve ☐ + ☐ = 4/3?

    • 1/3 + 2/3
    • 4/3 + 4/3
    • 2/3 + 2/3
    • 2/3 + 2/6
    Check

15. 15. Write the missing number: 7/9 − ☐ = 2/9

    • 5/0
    • 2/9
    • 9/9
    • 5/9
    Check

16. 16. Write the missing number: ☐ − 2/7 = 3/7

    • 5/14
    • 6/7
    • 1/7
    • 5/7
    Check

17. 17. Find the missing numbers. Row 1: 2/7 + ☐ = 6/7, 3/4 + ☐ = 5/4, 5/9 + ☐ = 10/9. Row 2: ☐ + 2/3 = 5/3, ☐ + 6/8 = 7/8, ☐ + 3/6 = 7/6. Row 3: 8/9 − ☐ = 4/9, 6/9 − ☐ = 3/9, 11/12 − ☐ = 2/12. Row 4: ☐ − 2/5 = 1/5, ☐ − 5/7 = 1/7, ☐ − 4/9 = 3/9. Which list gives the missing numbers in order?

    • 4/14, 2/8, 5/18, 3/6, 1/16, 4/12, 4/18, 3/18, 9/24, 3/10, 6/14, 7/18
    • 4/7, 2/4, 5/9, 3/3, 1/8, 4/6, 4/9, 3/9, 2/12, 1/5, 1/7, 3/9
    • 8/7, 8/4, 15/9, 7/3, 13/8, 10/6, 12/9, 9/9, 13/12, 1/5, 4/7, 1/9
    • 4/7, 2/4, 5/9, 3/3, 1/8, 4/6, 4/9, 3/9, 9/12, 3/5, 6/7, 7/9
    Check

18. 18. Which is a way to solve ☐ + ☐ = 7/3?

    • 7/3 + 7/3
    • 3/3 + 4/6
    • 3/3 + 4/3
    • 3/3 + 3/3
    Check

19. 19. Which two fractions have a sum of 7/8?

    • 3/8 and 4/16
    • 7/8 and 7/8
    • 3/8 and 4/8
    • 5/8 and 3/8
    Check

20. 20. Which two fractions have a difference of 3/8?

    • 5/8 and 3/8
    • 5/8 and 2/8
    • 7/8 and 3/8
    • 3/8 and 3/8
    Check