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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 211 · 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. 1.82 × 5 =
  2. 2.95 × 50 =
  3. 3.26 × 50 =
  4. 4.50 × 50 =
  5. 5.84 × 50 =
  6. 6.23 × 5 =
  7. 7.82 × 5 =
  8. 8.37 × 50 =
  9. 9.53 × 50 =
  10. 10.28 × 50 =
  11. 11.15 × 50 =
  12. 12.34 × 5 =
  13. 13.43 × 5 =
  14. 14.79 × 5 =
  15. 15.24 × 5 =
  16. 16.86 × 5 =
  17. 17.96 × 50 =
  18. 18.89 × 5 =
  19. 19.84 × 50 =
  20. 20.15 × 50 =
  21. 21.46 × 50 =
  22. 22.17 × 5 =
  23. 23.62 × 5 =
  24. 24.98 × 50 =
  25. 25.16 × 50 =
  26. 26.12 × 50 =
  27. 27.20 × 50 =
  28. 28.43 × 50 =
  29. 29.86 × 5 =
  30. 30.76 × 5 =
  31. 31.75 × 50 =
  32. 32.81 × 5 =
  33. 33.67 × 5 =
  34. 34.19 × 50 =
  35. 35.52 × 5 =
  36. 36.21 × 5 =
  37. 37.30 × 5 =
  38. 38.50 × 5 =
  39. 39.98 × 5 =
  40. 40.60 × 5 =

Answer key

  1. 410
  2. 4750
  3. 1300
  4. 2500
  5. 4200
  6. 115
  7. 410
  8. 1850
  9. 2650
  10. 1400
  11. 750
  12. 170
  13. 215
  14. 395
  15. 120
  16. 430
  17. 4800
  18. 445
  19. 4200
  20. 750
  21. 2300
  22. 85
  23. 310
  24. 4900
  25. 800
  26. 600
  27. 1000
  28. 2150
  29. 430
  30. 380
  31. 3750
  32. 405
  33. 335
  34. 950
  35. 260
  36. 105
  37. 150
  38. 250
  39. 490
  40. 300

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