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Multiply by 4 and 8 Mental Maths Worksheet

Mental maths lesson 10: Multiply by 4 and 8 by doubling · Set 992 · 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. 1.65 × 4 =
  2. 2.17 × 8 =
  3. 3.68 × 4 =
  4. 4.13 × 4 =
  5. 5.35 × 8 =
  6. 6.32 × 4 =
  7. 7.34 × 8 =
  8. 8.31 × 8 =
  9. 9.59 × 4 =
  10. 10.15 × 8 =
  11. 11.17 × 4 =
  12. 12.50 × 4 =
  13. 13.46 × 4 =
  14. 14.48 × 4 =
  15. 15.22 × 4 =
  16. 16.58 × 4 =
  17. 17.36 × 4 =
  18. 18.14 × 4 =
  19. 19.33 × 8 =
  20. 20.20 × 8 =
  21. 21.42 × 4 =
  22. 22.29 × 4 =
  23. 23.23 × 8 =
  24. 24.52 × 4 =
  25. 25.38 × 8 =
  26. 26.40 × 8 =
  27. 27.22 × 8 =
  28. 28.23 × 4 =
  29. 29.73 × 4 =
  30. 30.19 × 8 =
  31. 31.37 × 4 =
  32. 32.37 × 8 =
  33. 33.14 × 8 =
  34. 34.12 × 8 =
  35. 35.61 × 4 =
  36. 36.19 × 4 =
  37. 37.25 × 8 =
  38. 38.26 × 8 =
  39. 39.13 × 8 =
  40. 40.38 × 4 =

Answer key

  1. 260
  2. 136
  3. 272
  4. 52
  5. 280
  6. 128
  7. 272
  8. 248
  9. 236
  10. 120
  11. 68
  12. 200
  13. 184
  14. 192
  15. 88
  16. 232
  17. 144
  18. 56
  19. 264
  20. 160
  21. 168
  22. 116
  23. 184
  24. 208
  25. 304
  26. 320
  27. 176
  28. 92
  29. 292
  30. 152
  31. 148
  32. 296
  33. 112
  34. 96
  35. 244
  36. 76
  37. 200
  38. 208
  39. 104
  40. 152

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