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Multiply by 4 and 8 Mental Maths Worksheet

Mental maths lesson 10: Multiply by 4 and 8 by doubling · Set 468 · 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. 1.73 × 4 =
  2. 2.17 × 4 =
  3. 3.30 × 4 =
  4. 4.56 × 4 =
  5. 5.17 × 8 =
  6. 6.31 × 4 =
  7. 7.55 × 4 =
  8. 8.39 × 4 =
  9. 9.30 × 8 =
  10. 10.13 × 8 =
  11. 11.37 × 8 =
  12. 12.14 × 8 =
  13. 13.59 × 4 =
  14. 14.18 × 8 =
  15. 15.15 × 8 =
  16. 16.32 × 8 =
  17. 17.32 × 4 =
  18. 18.29 × 4 =
  19. 19.58 × 4 =
  20. 20.62 × 4 =
  21. 21.36 × 4 =
  22. 22.35 × 8 =
  23. 23.28 × 8 =
  24. 24.21 × 8 =
  25. 25.51 × 4 =
  26. 26.49 × 4 =
  27. 27.33 × 4 =
  28. 28.40 × 4 =
  29. 29.61 × 4 =
  30. 30.43 × 4 =
  31. 31.64 × 4 =
  32. 32.16 × 8 =
  33. 33.21 × 4 =
  34. 34.23 × 8 =
  35. 35.24 × 8 =
  36. 36.22 × 4 =
  37. 37.19 × 8 =
  38. 38.38 × 4 =
  39. 39.74 × 4 =
  40. 40.72 × 4 =

Answer key

  1. 292
  2. 68
  3. 120
  4. 224
  5. 136
  6. 124
  7. 220
  8. 156
  9. 240
  10. 104
  11. 296
  12. 112
  13. 236
  14. 144
  15. 120
  16. 256
  17. 128
  18. 116
  19. 232
  20. 248
  21. 144
  22. 280
  23. 224
  24. 168
  25. 204
  26. 196
  27. 132
  28. 160
  29. 244
  30. 172
  31. 256
  32. 128
  33. 84
  34. 184
  35. 192
  36. 88
  37. 152
  38. 152
  39. 296
  40. 288

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