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Multiply by 4 and 8 Mental Maths Worksheet

Mental maths lesson 10: Multiply by 4 and 8 by doubling · Set 956 · 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. 2.26 × 4 =
  3. 3.57 × 4 =
  4. 4.45 × 4 =
  5. 5.50 × 4 =
  6. 6.28 × 8 =
  7. 7.49 × 4 =
  8. 8.21 × 8 =
  9. 9.29 × 4 =
  10. 10.12 × 4 =
  11. 11.24 × 4 =
  12. 12.53 × 4 =
  13. 13.43 × 4 =
  14. 14.67 × 4 =
  15. 15.74 × 4 =
  16. 16.69 × 4 =
  17. 17.20 × 8 =
  18. 18.71 × 4 =
  19. 19.38 × 8 =
  20. 20.13 × 8 =
  21. 21.63 × 4 =
  22. 22.40 × 4 =
  23. 23.12 × 8 =
  24. 24.37 × 8 =
  25. 25.19 × 8 =
  26. 26.59 × 4 =
  27. 27.31 × 8 =
  28. 28.26 × 8 =
  29. 29.22 × 8 =
  30. 30.16 × 4 =
  31. 31.51 × 4 =
  32. 32.52 × 4 =
  33. 33.27 × 8 =
  34. 34.19 × 4 =
  35. 35.58 × 4 =
  36. 36.68 × 4 =
  37. 37.20 × 4 =
  38. 38.41 × 4 =
  39. 39.30 × 8 =
  40. 40.60 × 4 =

Answer key

  1. 260
  2. 104
  3. 228
  4. 180
  5. 200
  6. 224
  7. 196
  8. 168
  9. 116
  10. 48
  11. 96
  12. 212
  13. 172
  14. 268
  15. 296
  16. 276
  17. 160
  18. 284
  19. 304
  20. 104
  21. 252
  22. 160
  23. 96
  24. 296
  25. 152
  26. 236
  27. 248
  28. 208
  29. 176
  30. 64
  31. 204
  32. 208
  33. 216
  34. 76
  35. 232
  36. 272
  37. 80
  38. 164
  39. 240
  40. 240

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