Math 4 · Unit 5: Multiplication, multiples and factors · Cambridge Primary Maths Stage 4

Questions

1. 1. Calculate 345 × 9 using the grid method (300 × 9, 40 × 9, 5 × 9).

   • 3105
   • 3115
   • 2745
   • 3005
   Check

2. 2. Complete: 6 × 15 = 6 × 5 × 3 = ? × 3 = 90

   • 45
   • 30
   • 18
   • 11
   Check

3. 3. The numbers in the circles are multiplied together to give the numbers in the squares between them. Fill in the missing numbers.

   Fill the blanks with these.

   • 39
   • 68
   • 238
   • 36
   • 56
   • 42
   • 105
   • 15
   • 65
   Check

4. 4. What is double 78?

   • 158
   • 136
   • 146
   • 156
   Check

5. 5. Find the product of 58 and 9.

   • 522
   • 67
   • 512
   • 532
   Check

6. 6. Here are some number cards. Use each card once to make three products with the same answer. Write the rows in order of their first number 1, 2, 3.

   Fill the blanks with these.

   • 18
   • 1
   • 24
   • 9
   • 12
   • 36
   • 2
   • 3
   Check

7. 7. Emma and Astrid calculate 9 × 2 × 5. Complete their calculations.

   Fill the blanks with these.

   • 10
   • 9
   • 5
   • 18
   • 90
   • 14
   • 45
   Check

8. 8. Mario and Ian calculate 2 × 5 × 7. Complete their calculations.

   Fill the blanks with these.

   • 14
   • 35
   • 12
   • 7
   • 2
   • 10
   • 70
   Check

9. 9. Work out 25 × 8.

   • 200
   • 180
   • 250
   • 160
   Check

10. 10. Work out 69 × 6.

    • 424
    • 414
    • 364
    • 406
    Check

11. 11. Work out 76 × 9.

    • 694
    • 684
    • 674
    • 760
    Check

12. 12. Tick the 4 products that are equal to 2400.

    Tick all the right answers.

    • ☐ 900 × 3
    • ☐ 300 × 8
    • ☐ 600 × 4
    • ☐ 300 × 7
    • ☐ 400 × 6
    • ☐ 800 × 3
    Check

13. 13. Pierre uses the grid method to work out 147 × 3, but then spills ink on his work. What numbers are under the ink blots?

    Fill the blanks with these.

    • 441
    • 120
    • 12
    • 333
    Check

14. 14. Write what the missing digits could be: ??? × ? = 750. How many different answers can you find?

    • 4
    • 3
    • 5
    • 6
    Check

15. 15. Amy and Heidi work out 6 × 15. Which is another correct method for calculating 6 × 15?

    • 6 × 10 + 5 = 65
    • 6 × 5 + 15 = 45
    • 6 × 10 + 6 × 5 = 60 + 30 = 90
    • 6 + 15 = 21
    Check

16. 16. Estimate and calculate 318 × 2.

    • 626
    • 646
    • 636
    • 536
    Check

17. 17. Estimate and calculate 426 × 3.

    • 1200
    • 1268
    • 1288
    • 1278
    Check

18. 18. Estimate and calculate 512 × 7.

    • 3684
    • 3514
    • 3584
    • 3574
    Check

19. 19. Adah divides a number by 3 and gets 234. What number is she thinking of?

    • 692
    • 702
    • 237
    • 78
    Check

20. 20. Write the same digit in each box: 3?6 × ? = 3564.

    • 6
    • 7
    • 8
    • 9
    Check