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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 441 · 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. 1.37 × 50 =
  2. 2.74 × 5 =
  3. 3.88 × 50 =
  4. 4.75 × 5 =
  5. 5.89 × 5 =
  6. 6.72 × 5 =
  7. 7.88 × 50 =
  8. 8.47 × 50 =
  9. 9.26 × 5 =
  10. 10.56 × 50 =
  11. 11.14 × 50 =
  12. 12.78 × 50 =
  13. 13.55 × 5 =
  14. 14.98 × 50 =
  15. 15.28 × 50 =
  16. 16.95 × 5 =
  17. 17.73 × 5 =
  18. 18.58 × 5 =
  19. 19.56 × 5 =
  20. 20.59 × 5 =
  21. 21.30 × 5 =
  22. 22.35 × 5 =
  23. 23.44 × 5 =
  24. 24.88 × 5 =
  25. 25.79 × 50 =
  26. 26.56 × 50 =
  27. 27.26 × 50 =
  28. 28.13 × 5 =
  29. 29.37 × 5 =
  30. 30.54 × 50 =
  31. 31.18 × 50 =
  32. 32.69 × 50 =
  33. 33.87 × 5 =
  34. 34.61 × 5 =
  35. 35.47 × 50 =
  36. 36.75 × 50 =
  37. 37.29 × 5 =
  38. 38.92 × 50 =
  39. 39.82 × 50 =
  40. 40.50 × 50 =

Answer key

  1. 1850
  2. 370
  3. 4400
  4. 375
  5. 445
  6. 360
  7. 4400
  8. 2350
  9. 130
  10. 2800
  11. 700
  12. 3900
  13. 275
  14. 4900
  15. 1400
  16. 475
  17. 365
  18. 290
  19. 280
  20. 295
  21. 150
  22. 175
  23. 220
  24. 440
  25. 3950
  26. 2800
  27. 1300
  28. 65
  29. 185
  30. 2700
  31. 900
  32. 3450
  33. 435
  34. 305
  35. 2350
  36. 3750
  37. 145
  38. 4600
  39. 4100
  40. 2500

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