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Multiply by 4 and 8 Mental Maths Worksheet

Mental maths lesson 10: Multiply by 4 and 8 by doubling · Set 533 · 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. 1.46 × 4 =
  2. 2.37 × 8 =
  3. 3.17 × 4 =
  4. 4.15 × 4 =
  5. 5.33 × 8 =
  6. 6.51 × 4 =
  7. 7.22 × 4 =
  8. 8.38 × 4 =
  9. 9.38 × 8 =
  10. 10.26 × 8 =
  11. 11.28 × 8 =
  12. 12.59 × 4 =
  13. 13.65 × 4 =
  14. 14.31 × 8 =
  15. 15.61 × 4 =
  16. 16.42 × 4 =
  17. 17.62 × 4 =
  18. 18.29 × 8 =
  19. 19.68 × 4 =
  20. 20.64 × 4 =
  21. 21.22 × 8 =
  22. 22.21 × 8 =
  23. 23.43 × 4 =
  24. 24.14 × 8 =
  25. 25.17 × 8 =
  26. 26.18 × 8 =
  27. 27.31 × 4 =
  28. 28.57 × 4 =
  29. 29.73 × 4 =
  30. 30.13 × 4 =
  31. 31.27 × 4 =
  32. 32.50 × 4 =
  33. 33.32 × 8 =
  34. 34.12 × 8 =
  35. 35.20 × 8 =
  36. 36.24 × 4 =
  37. 37.16 × 8 =
  38. 38.69 × 4 =
  39. 39.44 × 4 =
  40. 40.23 × 8 =

Answer key

  1. 184
  2. 296
  3. 68
  4. 60
  5. 264
  6. 204
  7. 88
  8. 152
  9. 304
  10. 208
  11. 224
  12. 236
  13. 260
  14. 248
  15. 244
  16. 168
  17. 248
  18. 232
  19. 272
  20. 256
  21. 176
  22. 168
  23. 172
  24. 112
  25. 136
  26. 144
  27. 124
  28. 228
  29. 292
  30. 52
  31. 108
  32. 200
  33. 256
  34. 96
  35. 160
  36. 96
  37. 128
  38. 276
  39. 176
  40. 184

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