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Multiply by 4 and 8 Mental Maths Worksheet

Mental maths lesson 10: Multiply by 4 and 8 by doubling · Set 962 · 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. 1.12 × 8 =
  2. 2.35 × 4 =
  3. 3.44 × 4 =
  4. 4.61 × 4 =
  5. 5.13 × 8 =
  6. 6.74 × 4 =
  7. 7.32 × 8 =
  8. 8.35 × 8 =
  9. 9.26 × 8 =
  10. 10.27 × 8 =
  11. 11.29 × 4 =
  12. 12.51 × 4 =
  13. 13.55 × 4 =
  14. 14.68 × 4 =
  15. 15.30 × 8 =
  16. 16.16 × 8 =
  17. 17.31 × 8 =
  18. 18.33 × 4 =
  19. 19.71 × 4 =
  20. 20.26 × 4 =
  21. 21.40 × 4 =
  22. 22.22 × 4 =
  23. 23.53 × 4 =
  24. 24.17 × 8 =
  25. 25.20 × 8 =
  26. 26.48 × 4 =
  27. 27.14 × 8 =
  28. 28.56 × 4 =
  29. 29.66 × 4 =
  30. 30.42 × 4 =
  31. 31.21 × 8 =
  32. 32.15 × 8 =
  33. 33.46 × 4 =
  34. 34.23 × 4 =
  35. 35.72 × 4 =
  36. 36.37 × 8 =
  37. 37.20 × 4 =
  38. 38.19 × 8 =
  39. 39.54 × 4 =
  40. 40.36 × 8 =

Answer key

  1. 96
  2. 140
  3. 176
  4. 244
  5. 104
  6. 296
  7. 256
  8. 280
  9. 208
  10. 216
  11. 116
  12. 204
  13. 220
  14. 272
  15. 240
  16. 128
  17. 248
  18. 132
  19. 284
  20. 104
  21. 160
  22. 88
  23. 212
  24. 136
  25. 160
  26. 192
  27. 112
  28. 224
  29. 264
  30. 168
  31. 168
  32. 120
  33. 184
  34. 92
  35. 288
  36. 296
  37. 80
  38. 152
  39. 216
  40. 288

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