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Multiply by 4 and 8 Mental Maths Worksheet

Mental maths lesson 10: Multiply by 4 and 8 by doubling · Set 435 · 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 × 4 =
  2. 2.47 × 4 =
  3. 3.16 × 8 =
  4. 4.48 × 4 =
  5. 5.75 × 4 =
  6. 6.43 × 4 =
  7. 7.39 × 8 =
  8. 8.59 × 4 =
  9. 9.38 × 4 =
  10. 10.32 × 4 =
  11. 11.67 × 4 =
  12. 12.17 × 4 =
  13. 13.19 × 8 =
  14. 14.29 × 8 =
  15. 15.23 × 8 =
  16. 16.26 × 8 =
  17. 17.28 × 8 =
  18. 18.24 × 8 =
  19. 19.33 × 4 =
  20. 20.54 × 4 =
  21. 21.21 × 4 =
  22. 22.12 × 8 =
  23. 23.17 × 8 =
  24. 24.35 × 4 =
  25. 25.15 × 8 =
  26. 26.15 × 4 =
  27. 27.69 × 4 =
  28. 28.70 × 4 =
  29. 29.53 × 4 =
  30. 30.50 × 4 =
  31. 31.60 × 4 =
  32. 32.28 × 4 =
  33. 33.14 × 8 =
  34. 34.57 × 4 =
  35. 35.36 × 8 =
  36. 36.40 × 8 =
  37. 37.38 × 8 =
  38. 38.13 × 8 =
  39. 39.44 × 4 =
  40. 40.18 × 4 =

Answer key

  1. 88
  2. 188
  3. 128
  4. 192
  5. 300
  6. 172
  7. 312
  8. 236
  9. 152
  10. 128
  11. 268
  12. 68
  13. 152
  14. 232
  15. 184
  16. 208
  17. 224
  18. 192
  19. 132
  20. 216
  21. 84
  22. 96
  23. 136
  24. 140
  25. 120
  26. 60
  27. 276
  28. 280
  29. 212
  30. 200
  31. 240
  32. 112
  33. 112
  34. 228
  35. 288
  36. 320
  37. 304
  38. 104
  39. 176
  40. 72

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