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Multiply by 4 and 8 Mental Maths Worksheet

Mental maths lesson 10: Multiply by 4 and 8 by doubling · Set 182 · 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. 1.37 × 8 =
  2. 2.23 × 4 =
  3. 3.30 × 4 =
  4. 4.41 × 4 =
  5. 5.26 × 4 =
  6. 6.24 × 8 =
  7. 7.29 × 8 =
  8. 8.36 × 4 =
  9. 9.50 × 4 =
  10. 10.63 × 4 =
  11. 11.14 × 4 =
  12. 12.61 × 4 =
  13. 13.26 × 8 =
  14. 14.46 × 4 =
  15. 15.21 × 8 =
  16. 16.74 × 4 =
  17. 17.33 × 8 =
  18. 18.19 × 4 =
  19. 19.22 × 4 =
  20. 20.42 × 4 =
  21. 21.20 × 4 =
  22. 22.48 × 4 =
  23. 23.38 × 8 =
  24. 24.62 × 4 =
  25. 25.37 × 4 =
  26. 26.34 × 8 =
  27. 27.12 × 4 =
  28. 28.28 × 8 =
  29. 29.73 × 4 =
  30. 30.32 × 4 =
  31. 31.57 × 4 =
  32. 32.27 × 4 =
  33. 33.24 × 4 =
  34. 34.67 × 4 =
  35. 35.25 × 8 =
  36. 36.33 × 4 =
  37. 37.13 × 4 =
  38. 38.27 × 8 =
  39. 39.40 × 4 =
  40. 40.69 × 4 =

Answer key

  1. 296
  2. 92
  3. 120
  4. 164
  5. 104
  6. 192
  7. 232
  8. 144
  9. 200
  10. 252
  11. 56
  12. 244
  13. 208
  14. 184
  15. 168
  16. 296
  17. 264
  18. 76
  19. 88
  20. 168
  21. 80
  22. 192
  23. 304
  24. 248
  25. 148
  26. 272
  27. 48
  28. 224
  29. 292
  30. 128
  31. 228
  32. 108
  33. 96
  34. 268
  35. 200
  36. 132
  37. 52
  38. 216
  39. 160
  40. 276

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