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Multiply by 4 and 8 Mental Maths Worksheet

Mental maths lesson 10: Multiply by 4 and 8 by doubling · Set 880 · 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. 1.21 × 8 =
  2. 2.75 × 4 =
  3. 3.58 × 4 =
  4. 4.47 × 4 =
  5. 5.20 × 8 =
  6. 6.24 × 4 =
  7. 7.51 × 4 =
  8. 8.25 × 4 =
  9. 9.23 × 4 =
  10. 10.27 × 4 =
  11. 11.22 × 8 =
  12. 12.67 × 4 =
  13. 13.14 × 4 =
  14. 14.36 × 8 =
  15. 15.54 × 4 =
  16. 16.40 × 8 =
  17. 17.35 × 8 =
  18. 18.19 × 8 =
  19. 19.65 × 4 =
  20. 20.24 × 8 =
  21. 21.15 × 4 =
  22. 22.28 × 8 =
  23. 23.72 × 4 =
  24. 24.64 × 4 =
  25. 25.61 × 4 =
  26. 26.34 × 4 =
  27. 27.56 × 4 =
  28. 28.26 × 4 =
  29. 29.32 × 8 =
  30. 30.17 × 8 =
  31. 31.34 × 8 =
  32. 32.71 × 4 =
  33. 33.16 × 4 =
  34. 34.31 × 8 =
  35. 35.55 × 4 =
  36. 36.29 × 4 =
  37. 37.21 × 4 =
  38. 38.14 × 8 =
  39. 39.68 × 4 =
  40. 40.38 × 8 =

Answer key

  1. 168
  2. 300
  3. 232
  4. 188
  5. 160
  6. 96
  7. 204
  8. 100
  9. 92
  10. 108
  11. 176
  12. 268
  13. 56
  14. 288
  15. 216
  16. 320
  17. 280
  18. 152
  19. 260
  20. 192
  21. 60
  22. 224
  23. 288
  24. 256
  25. 244
  26. 136
  27. 224
  28. 104
  29. 256
  30. 136
  31. 272
  32. 284
  33. 64
  34. 248
  35. 220
  36. 116
  37. 84
  38. 112
  39. 272
  40. 304

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