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Multiply by 4 and 8 Mental Maths Worksheet

Mental maths lesson 10: Multiply by 4 and 8 by doubling · Set 980 · 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. 1.54 × 4 =
  2. 2.27 × 8 =
  3. 3.64 × 4 =
  4. 4.61 × 4 =
  5. 5.25 × 8 =
  6. 6.22 × 4 =
  7. 7.40 × 8 =
  8. 8.19 × 8 =
  9. 9.34 × 4 =
  10. 10.29 × 4 =
  11. 11.65 × 4 =
  12. 12.75 × 4 =
  13. 13.51 × 4 =
  14. 14.24 × 8 =
  15. 15.37 × 8 =
  16. 16.34 × 8 =
  17. 17.53 × 4 =
  18. 18.18 × 8 =
  19. 19.41 × 4 =
  20. 20.20 × 8 =
  21. 21.12 × 8 =
  22. 22.66 × 4 =
  23. 23.23 × 8 =
  24. 24.58 × 4 =
  25. 25.23 × 4 =
  26. 26.13 × 8 =
  27. 27.14 × 8 =
  28. 28.26 × 4 =
  29. 29.24 × 4 =
  30. 30.45 × 4 =
  31. 31.43 × 4 =
  32. 32.36 × 8 =
  33. 33.40 × 4 =
  34. 34.48 × 4 =
  35. 35.21 × 8 =
  36. 36.27 × 4 =
  37. 37.57 × 4 =
  38. 38.35 × 8 =
  39. 39.50 × 4 =
  40. 40.63 × 4 =

Answer key

  1. 216
  2. 216
  3. 256
  4. 244
  5. 200
  6. 88
  7. 320
  8. 152
  9. 136
  10. 116
  11. 260
  12. 300
  13. 204
  14. 192
  15. 296
  16. 272
  17. 212
  18. 144
  19. 164
  20. 160
  21. 96
  22. 264
  23. 184
  24. 232
  25. 92
  26. 104
  27. 112
  28. 104
  29. 96
  30. 180
  31. 172
  32. 288
  33. 160
  34. 192
  35. 168
  36. 108
  37. 228
  38. 280
  39. 200
  40. 252

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