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Multiply by 4 and 8 Mental Maths Worksheet

Mental maths lesson 10: Multiply by 4 and 8 by doubling · Set 846 · 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. 1.31 × 4 =
  2. 2.23 × 8 =
  3. 3.59 × 4 =
  4. 4.12 × 8 =
  5. 5.69 × 4 =
  6. 6.36 × 4 =
  7. 7.33 × 8 =
  8. 8.68 × 4 =
  9. 9.41 × 4 =
  10. 10.35 × 4 =
  11. 11.28 × 8 =
  12. 12.37 × 8 =
  13. 13.55 × 4 =
  14. 14.27 × 8 =
  15. 15.24 × 4 =
  16. 16.75 × 4 =
  17. 17.17 × 4 =
  18. 18.29 × 4 =
  19. 19.31 × 8 =
  20. 20.54 × 4 =
  21. 21.28 × 4 =
  22. 22.66 × 4 =
  23. 23.32 × 4 =
  24. 24.36 × 8 =
  25. 25.12 × 4 =
  26. 26.25 × 8 =
  27. 27.44 × 4 =
  28. 28.19 × 4 =
  29. 29.65 × 4 =
  30. 30.15 × 8 =
  31. 31.25 × 4 =
  32. 32.30 × 4 =
  33. 33.24 × 8 =
  34. 34.18 × 8 =
  35. 35.35 × 8 =
  36. 36.34 × 4 =
  37. 37.22 × 8 =
  38. 38.71 × 4 =
  39. 39.40 × 4 =
  40. 40.19 × 8 =

Answer key

  1. 124
  2. 184
  3. 236
  4. 96
  5. 276
  6. 144
  7. 264
  8. 272
  9. 164
  10. 140
  11. 224
  12. 296
  13. 220
  14. 216
  15. 96
  16. 300
  17. 68
  18. 116
  19. 248
  20. 216
  21. 112
  22. 264
  23. 128
  24. 288
  25. 48
  26. 200
  27. 176
  28. 76
  29. 260
  30. 120
  31. 100
  32. 120
  33. 192
  34. 144
  35. 280
  36. 136
  37. 176
  38. 284
  39. 160
  40. 152

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