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Multiply by 4 and 8 Mental Maths Worksheet

Mental maths lesson 10: Multiply by 4 and 8 by doubling · Set 712 · 40 questions
TalentJR

How to do it in your head (Double, double, double): × 2: double once. × 4: double, then double again. × 8: double three times.

NameDateTime takenScore ___ / 40
  1. 1.22 × 4 =
  2. 2.40 × 8 =
  3. 3.13 × 8 =
  4. 4.33 × 8 =
  5. 5.44 × 4 =
  6. 6.35 × 8 =
  7. 7.14 × 4 =
  8. 8.38 × 8 =
  9. 9.63 × 4 =
  10. 10.70 × 4 =
  11. 11.37 × 8 =
  12. 12.74 × 4 =
  13. 13.19 × 4 =
  14. 14.16 × 8 =
  15. 15.17 × 8 =
  16. 16.22 × 8 =
  17. 17.37 × 4 =
  18. 18.29 × 8 =
  19. 19.20 × 4 =
  20. 20.15 × 8 =
  21. 21.34 × 4 =
  22. 22.20 × 8 =
  23. 23.57 × 4 =
  24. 24.53 × 4 =
  25. 25.24 × 8 =
  26. 26.18 × 8 =
  27. 27.54 × 4 =
  28. 28.12 × 8 =
  29. 29.31 × 4 =
  30. 30.31 × 8 =
  31. 31.65 × 4 =
  32. 32.41 × 4 =
  33. 33.25 × 4 =
  34. 34.48 × 4 =
  35. 35.49 × 4 =
  36. 36.21 × 8 =
  37. 37.16 × 4 =
  38. 38.19 × 8 =
  39. 39.36 × 8 =
  40. 40.13 × 4 =

Answer key

  1. 88
  2. 320
  3. 104
  4. 264
  5. 176
  6. 280
  7. 56
  8. 304
  9. 252
  10. 280
  11. 296
  12. 296
  13. 76
  14. 128
  15. 136
  16. 176
  17. 148
  18. 232
  19. 80
  20. 120
  21. 136
  22. 160
  23. 228
  24. 212
  25. 192
  26. 144
  27. 216
  28. 96
  29. 124
  30. 248
  31. 260
  32. 164
  33. 100
  34. 192
  35. 196
  36. 168
  37. 64
  38. 152
  39. 288
  40. 52

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