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Multiply by 4 and 8 Mental Maths Worksheet

Mental maths lesson 10: Multiply by 4 and 8 by doubling · Set 961 · 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. 1.16 × 8 =
  2. 2.22 × 4 =
  3. 3.34 × 4 =
  4. 4.36 × 4 =
  5. 5.28 × 8 =
  6. 6.21 × 4 =
  7. 7.32 × 8 =
  8. 8.16 × 4 =
  9. 9.43 × 4 =
  10. 10.40 × 8 =
  11. 11.68 × 4 =
  12. 12.34 × 8 =
  13. 13.37 × 8 =
  14. 14.33 × 8 =
  15. 15.66 × 4 =
  16. 16.17 × 4 =
  17. 17.62 × 4 =
  18. 18.74 × 4 =
  19. 19.20 × 8 =
  20. 20.71 × 4 =
  21. 21.15 × 8 =
  22. 22.26 × 8 =
  23. 23.59 × 4 =
  24. 24.32 × 4 =
  25. 25.39 × 8 =
  26. 26.55 × 4 =
  27. 27.56 × 4 =
  28. 28.38 × 8 =
  29. 29.28 × 4 =
  30. 30.17 × 8 =
  31. 31.48 × 4 =
  32. 32.19 × 4 =
  33. 33.53 × 4 =
  34. 34.29 × 8 =
  35. 35.31 × 4 =
  36. 36.33 × 4 =
  37. 37.21 × 8 =
  38. 38.73 × 4 =
  39. 39.22 × 8 =
  40. 40.36 × 8 =

Answer key

  1. 128
  2. 88
  3. 136
  4. 144
  5. 224
  6. 84
  7. 256
  8. 64
  9. 172
  10. 320
  11. 272
  12. 272
  13. 296
  14. 264
  15. 264
  16. 68
  17. 248
  18. 296
  19. 160
  20. 284
  21. 120
  22. 208
  23. 236
  24. 128
  25. 312
  26. 220
  27. 224
  28. 304
  29. 112
  30. 136
  31. 192
  32. 76
  33. 212
  34. 232
  35. 124
  36. 132
  37. 168
  38. 292
  39. 176
  40. 288

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