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Multiply by 4 and 8 Mental Maths Worksheet

Mental maths lesson 10: Multiply by 4 and 8 by doubling · Set 687 · 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. 1.53 × 4 =
  2. 2.14 × 8 =
  3. 3.13 × 8 =
  4. 4.12 × 4 =
  5. 5.27 × 8 =
  6. 6.43 × 4 =
  7. 7.18 × 8 =
  8. 8.32 × 8 =
  9. 9.64 × 4 =
  10. 10.22 × 4 =
  11. 11.37 × 8 =
  12. 12.59 × 4 =
  13. 13.38 × 8 =
  14. 14.24 × 8 =
  15. 15.35 × 8 =
  16. 16.45 × 4 =
  17. 17.12 × 8 =
  18. 18.49 × 4 =
  19. 19.47 × 4 =
  20. 20.34 × 8 =
  21. 21.60 × 4 =
  22. 22.16 × 4 =
  23. 23.56 × 4 =
  24. 24.29 × 4 =
  25. 25.23 × 8 =
  26. 26.52 × 4 =
  27. 27.25 × 8 =
  28. 28.21 × 8 =
  29. 29.70 × 4 =
  30. 30.68 × 4 =
  31. 31.19 × 8 =
  32. 32.55 × 4 =
  33. 33.22 × 8 =
  34. 34.35 × 4 =
  35. 35.15 × 4 =
  36. 36.65 × 4 =
  37. 37.21 × 4 =
  38. 38.39 × 8 =
  39. 39.36 × 8 =
  40. 40.46 × 4 =

Answer key

  1. 212
  2. 112
  3. 104
  4. 48
  5. 216
  6. 172
  7. 144
  8. 256
  9. 256
  10. 88
  11. 296
  12. 236
  13. 304
  14. 192
  15. 280
  16. 180
  17. 96
  18. 196
  19. 188
  20. 272
  21. 240
  22. 64
  23. 224
  24. 116
  25. 184
  26. 208
  27. 200
  28. 168
  29. 280
  30. 272
  31. 152
  32. 220
  33. 176
  34. 140
  35. 60
  36. 260
  37. 84
  38. 312
  39. 288
  40. 184

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