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Multiply by 4 and 8 Mental Maths Worksheet

Mental maths lesson 10: Multiply by 4 and 8 by doubling · Set 203 · 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 × 8 =
  2. 2.13 × 4 =
  3. 3.26 × 4 =
  4. 4.15 × 8 =
  5. 5.23 × 4 =
  6. 6.66 × 4 =
  7. 7.64 × 4 =
  8. 8.67 × 4 =
  9. 9.18 × 8 =
  10. 10.59 × 4 =
  11. 11.19 × 4 =
  12. 12.15 × 4 =
  13. 13.43 × 4 =
  14. 14.63 × 4 =
  15. 15.56 × 4 =
  16. 16.26 × 8 =
  17. 17.40 × 8 =
  18. 18.33 × 4 =
  19. 19.13 × 8 =
  20. 20.17 × 8 =
  21. 21.36 × 8 =
  22. 22.21 × 8 =
  23. 23.34 × 8 =
  24. 24.74 × 4 =
  25. 25.17 × 4 =
  26. 26.53 × 4 =
  27. 27.57 × 4 =
  28. 28.27 × 4 =
  29. 29.25 × 8 =
  30. 30.47 × 4 =
  31. 31.12 × 8 =
  32. 32.36 × 4 =
  33. 33.35 × 4 =
  34. 34.29 × 8 =
  35. 35.19 × 8 =
  36. 36.38 × 8 =
  37. 37.39 × 8 =
  38. 38.38 × 4 =
  39. 39.30 × 4 =
  40. 40.37 × 4 =

Answer key

  1. 176
  2. 52
  3. 104
  4. 120
  5. 92
  6. 264
  7. 256
  8. 268
  9. 144
  10. 236
  11. 76
  12. 60
  13. 172
  14. 252
  15. 224
  16. 208
  17. 320
  18. 132
  19. 104
  20. 136
  21. 288
  22. 168
  23. 272
  24. 296
  25. 68
  26. 212
  27. 228
  28. 108
  29. 200
  30. 188
  31. 96
  32. 144
  33. 140
  34. 232
  35. 152
  36. 304
  37. 312
  38. 152
  39. 120
  40. 148

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