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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 115 · 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. 1.74 × 5 =
  2. 2.61 × 5 =
  3. 3.88 × 50 =
  4. 4.85 × 5 =
  5. 5.95 × 50 =
  6. 6.95 × 5 =
  7. 7.30 × 5 =
  8. 8.78 × 5 =
  9. 9.52 × 5 =
  10. 10.60 × 50 =
  11. 11.82 × 50 =
  12. 12.89 × 5 =
  13. 13.30 × 5 =
  14. 14.24 × 50 =
  15. 15.27 × 5 =
  16. 16.80 × 50 =
  17. 17.65 × 5 =
  18. 18.51 × 5 =
  19. 19.61 × 5 =
  20. 20.30 × 50 =
  21. 21.47 × 5 =
  22. 22.93 × 50 =
  23. 23.15 × 5 =
  24. 24.44 × 50 =
  25. 25.55 × 5 =
  26. 26.17 × 50 =
  27. 27.12 × 50 =
  28. 28.69 × 5 =
  29. 29.26 × 5 =
  30. 30.28 × 50 =
  31. 31.85 × 5 =
  32. 32.33 × 5 =
  33. 33.25 × 50 =
  34. 34.78 × 50 =
  35. 35.64 × 50 =
  36. 36.76 × 50 =
  37. 37.34 × 50 =
  38. 38.26 × 50 =
  39. 39.43 × 5 =
  40. 40.21 × 50 =

Answer key

  1. 370
  2. 305
  3. 4400
  4. 425
  5. 4750
  6. 475
  7. 150
  8. 390
  9. 260
  10. 3000
  11. 4100
  12. 445
  13. 150
  14. 1200
  15. 135
  16. 4000
  17. 325
  18. 255
  19. 305
  20. 1500
  21. 235
  22. 4650
  23. 75
  24. 2200
  25. 275
  26. 850
  27. 600
  28. 345
  29. 130
  30. 1400
  31. 425
  32. 165
  33. 1250
  34. 3900
  35. 3200
  36. 3800
  37. 1700
  38. 1300
  39. 215
  40. 1050

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