Math 3 · Unit 9: More addition and subtraction · Cambridge Primary Maths Stage 3

Questions

1. 1. What is the complement of 73 to 100?

   • 33
   • 37
   • 27
   • 23
   Check

2. 2. What is the complement of 25 to 100?

   • 25
   • 65
   • 85
   • 75
   Check

3. 3. What is the complement of 59 to 100?

   • 51
   • 41
   • 31
   • 49
   Check

4. 4. Which pair of hundreds makes 1000?

   • 400 + 500
   • 300 + 600
   • 300 + 700
   • 200 + 700
   Check

5. 5. There are 100 books. 23 are borrowed. How many are left?

   • 77
   • 87
   • 23
   • 83
   Check

6. 6. Liling has 100 marbles and loses 17. How many are left?

   • 73
   • 87
   • 83
   • 93
   Check

7. 7. Luiz has $100 and spends $38. How much is left?

   • $62
   • $68
   • $52
   • $72
   Check

8. 8. 43 cm is cut from 1 metre of string. How long is the rest?

   • 57 cm
   • 47 cm
   • 67 cm
   • 53 cm
   Check

9. 9. 100 pencils; 32 are given out. How many are left?

   • 68
   • 78
   • 62
   • 72
   Check

10. 10. 410 + 240 = ?

    • 640
    • 660
    • 650
    • 550
    Check

11. 11. 720 + 180 = ?

    • 910
    • 900
    • 800
    • 890
    Check

12. 12. 940 − 340 = ?

    • 500
    • 610
    • 700
    • 600
    Check

13. 13. 530 − 270 = ?

    • 340
    • 360
    • 240
    • 260
    Check

14. 14. Which pair is a complement of 1000?

    • 550 + 350
    • 650 + 450
    • 750 + 350
    • 650 + 350
    Check

15. 15. 750 − 670 = ?

    • 180
    • 120
    • 20
    • 80
    Check