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Multiply by 4 and 8 Mental Maths Worksheet

Mental maths lesson 10: Multiply by 4 and 8 by doubling · Set 701 · 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. 1.35 × 8 =
  2. 2.23 × 8 =
  3. 3.24 × 8 =
  4. 4.39 × 8 =
  5. 5.26 × 4 =
  6. 6.54 × 4 =
  7. 7.13 × 8 =
  8. 8.37 × 4 =
  9. 9.48 × 4 =
  10. 10.41 × 4 =
  11. 11.20 × 8 =
  12. 12.17 × 8 =
  13. 13.30 × 4 =
  14. 14.28 × 8 =
  15. 15.25 × 8 =
  16. 16.18 × 8 =
  17. 17.55 × 4 =
  18. 18.18 × 4 =
  19. 19.61 × 4 =
  20. 20.44 × 4 =
  21. 21.66 × 4 =
  22. 22.21 × 8 =
  23. 23.65 × 4 =
  24. 24.19 × 8 =
  25. 25.47 × 4 =
  26. 26.39 × 4 =
  27. 27.15 × 8 =
  28. 28.33 × 8 =
  29. 29.59 × 4 =
  30. 30.63 × 4 =
  31. 31.16 × 8 =
  32. 32.74 × 4 =
  33. 33.67 × 4 =
  34. 34.32 × 8 =
  35. 35.27 × 8 =
  36. 36.38 × 8 =
  37. 37.26 × 8 =
  38. 38.32 × 4 =
  39. 39.45 × 4 =
  40. 40.19 × 4 =

Answer key

  1. 280
  2. 184
  3. 192
  4. 312
  5. 104
  6. 216
  7. 104
  8. 148
  9. 192
  10. 164
  11. 160
  12. 136
  13. 120
  14. 224
  15. 200
  16. 144
  17. 220
  18. 72
  19. 244
  20. 176
  21. 264
  22. 168
  23. 260
  24. 152
  25. 188
  26. 156
  27. 120
  28. 264
  29. 236
  30. 252
  31. 128
  32. 296
  33. 268
  34. 256
  35. 216
  36. 304
  37. 208
  38. 128
  39. 180
  40. 76

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