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Multiply by 4 and 8 Mental Maths Worksheet

Mental maths lesson 10: Multiply by 4 and 8 by doubling · Set 748 · 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. 1.18 × 8 =
  2. 2.37 × 8 =
  3. 3.50 × 4 =
  4. 4.31 × 8 =
  5. 5.60 × 4 =
  6. 6.48 × 4 =
  7. 7.28 × 8 =
  8. 8.63 × 4 =
  9. 9.13 × 8 =
  10. 10.26 × 8 =
  11. 11.65 × 4 =
  12. 12.56 × 4 =
  13. 13.61 × 4 =
  14. 14.67 × 4 =
  15. 15.54 × 4 =
  16. 16.59 × 4 =
  17. 17.16 × 8 =
  18. 18.23 × 8 =
  19. 19.19 × 8 =
  20. 20.32 × 8 =
  21. 21.39 × 8 =
  22. 22.13 × 4 =
  23. 23.14 × 4 =
  24. 24.40 × 4 =
  25. 25.29 × 8 =
  26. 26.68 × 4 =
  27. 27.75 × 4 =
  28. 28.31 × 4 =
  29. 29.39 × 4 =
  30. 30.22 × 4 =
  31. 31.38 × 8 =
  32. 32.73 × 4 =
  33. 33.36 × 8 =
  34. 34.12 × 4 =
  35. 35.15 × 8 =
  36. 36.24 × 4 =
  37. 37.22 × 8 =
  38. 38.57 × 4 =
  39. 39.51 × 4 =
  40. 40.29 × 4 =

Answer key

  1. 144
  2. 296
  3. 200
  4. 248
  5. 240
  6. 192
  7. 224
  8. 252
  9. 104
  10. 208
  11. 260
  12. 224
  13. 244
  14. 268
  15. 216
  16. 236
  17. 128
  18. 184
  19. 152
  20. 256
  21. 312
  22. 52
  23. 56
  24. 160
  25. 232
  26. 272
  27. 300
  28. 124
  29. 156
  30. 88
  31. 304
  32. 292
  33. 288
  34. 48
  35. 120
  36. 96
  37. 176
  38. 228
  39. 204
  40. 116

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