Math 4 · Unit 3: Addition and subtraction of whole numbers · Cambridge Primary Maths Stage 4

Questions

1. 1. Write the missing number: 85 + ? = 200

   • 285
   • 125
   • 15
   • 115
   Check

2. 2. Write the missing number: 37 + ? = 100

   • 137
   • 67
   • 63
   • 73
   Check

3. 3. The scales balance. What is the missing number?

   • 550
   • 1300
   • 700
   • 1000
   Check

4. 4. Write the missing digits.

   Fill the blanks with these.

   • 4
   • 0
   • 6
   • 1
   • 5
   Check

5. 5. Write the missing number: ? − 8 = 505

   • 585
   • 503
   • 497
   • 513
   Check

6. 6. The numbers along each edge must add up to 80. Put the missing numbers in the empty circles.

   Fill the blanks with these.

   • 30
   • 20
   • 10
   • 40
   • 50
   Check

7. 7. Write the missing number: ? + 7 + 8 = 28

   • 13
   • 15
   • 21
   • 43
   Check

8. 8. Write the missing number: ? − 250 = 1000

   • 1250
   • 1025
   • 250
   • 750
   Check

9. 9. Write the missing number: 48 − ? = 26

   • 12
   • 22
   • 32
   • 74
   Check

10. 10. The numbers in the two circles add up to the number in the square (5 and 12 make 17). Use the same rule to put the missing numbers in the empty square and circle.

    Fill the blanks with these.

    • 47
    • 16
    • 163
    • 46
    • 56
    • 37
    Check

11. 11. Δ and □ are single digits and Δ + □ = 4. How many different pairs (Δ, □) are possible?

    • 3
    • 4
    • 2
    • 5
    Check

12. 12. Use four of the digit cards 1, 2, 3, 4, 5, 6 to make ?? + ?? = 40. Which works?

    • 20 + 20
    • 15 + 25
    • 14 + 26
    • 13 + 27
    Check

13. 13. Complete the number sentence: 304 is ? more than 296.

    • 12
    • 108
    • 8
    • 18
    Check

14. 14. Write the missing number: 65 − 58 = ?

    • 13
    • 123
    • 7
    • 3
    Check

15. 15. Write the missing digit: 41 − 2? = 12

    • 7
    • 8
    • 9
    • 3
    Check

16. 16. Write the missing number: 86 − 79 = ?

    • 3
    • 7
    • 107
    • 13
    Check

17. 17. Write the missing digit: 67 − ?8 = 39

    • 2
    • 4
    • 3
    • 1
    Check

18. 18. The numbers along each edge must add up to 90. Use 30, 40, 50 and 60 once each to complete the number triangle.

    Fill the blanks with these.

    • 30
    • 40
    • 60
    • 50
    Check

19. 19. Use each of the discs 1, 2, 3, 4, 5 once so the total across equals the total down. Which number could go in the middle?

    • 4
    • 3
    • none of them
    • 2
    Check