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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 865 · 40 questions
TalentJR

The fast method (Halve first): Halve the number. × 5: multiply the half by 10. × 50: multiply the half by 100. Odd number? Its half ends in .5 — 43 → 21.5 — and × 10 moves the point: 215.

NameDateTime takenScore ___ / 40
  1. 1.23 × 5 =
  2. 2.62 × 50 =
  3. 3.86 × 5 =
  4. 4.83 × 50 =
  5. 5.62 × 50 =
  6. 6.86 × 5 =
  7. 7.27 × 50 =
  8. 8.54 × 5 =
  9. 9.34 × 50 =
  10. 10.21 × 5 =
  11. 11.91 × 50 =
  12. 12.62 × 5 =
  13. 13.13 × 50 =
  14. 14.93 × 5 =
  15. 15.36 × 50 =
  16. 16.37 × 5 =
  17. 17.38 × 5 =
  18. 18.83 × 50 =
  19. 19.48 × 50 =
  20. 20.70 × 5 =
  21. 21.29 × 50 =
  22. 22.92 × 5 =
  23. 23.19 × 50 =
  24. 24.28 × 5 =
  25. 25.60 × 5 =
  26. 26.75 × 5 =
  27. 27.88 × 5 =
  28. 28.65 × 50 =
  29. 29.77 × 5 =
  30. 30.75 × 50 =
  31. 31.73 × 50 =
  32. 32.47 × 5 =
  33. 33.53 × 5 =
  34. 34.47 × 50 =
  35. 35.80 × 50 =
  36. 36.53 × 5 =
  37. 37.30 × 5 =
  38. 38.81 × 50 =
  39. 39.51 × 5 =
  40. 40.12 × 5 =

Answer key

  1. 115
  2. 3100
  3. 430
  4. 4150
  5. 3100
  6. 430
  7. 1350
  8. 270
  9. 1700
  10. 105
  11. 4550
  12. 310
  13. 650
  14. 465
  15. 1800
  16. 185
  17. 190
  18. 4150
  19. 2400
  20. 350
  21. 1450
  22. 460
  23. 950
  24. 140
  25. 300
  26. 375
  27. 440
  28. 3250
  29. 385
  30. 3750
  31. 3650
  32. 235
  33. 265
  34. 2350
  35. 4000
  36. 265
  37. 150
  38. 4050
  39. 255
  40. 60

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