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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 515 · 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. 1.44 × 5 =
  2. 2.68 × 50 =
  3. 3.14 × 5 =
  4. 4.52 × 5 =
  5. 5.95 × 50 =
  6. 6.47 × 5 =
  7. 7.45 × 50 =
  8. 8.49 × 5 =
  9. 9.58 × 50 =
  10. 10.49 × 5 =
  11. 11.89 × 5 =
  12. 12.13 × 50 =
  13. 13.53 × 50 =
  14. 14.63 × 5 =
  15. 15.76 × 5 =
  16. 16.42 × 5 =
  17. 17.57 × 50 =
  18. 18.98 × 50 =
  19. 19.28 × 50 =
  20. 20.81 × 50 =
  21. 21.95 × 5 =
  22. 22.84 × 5 =
  23. 23.98 × 5 =
  24. 24.63 × 50 =
  25. 25.23 × 50 =
  26. 26.80 × 50 =
  27. 27.43 × 5 =
  28. 28.13 × 50 =
  29. 29.50 × 50 =
  30. 30.70 × 50 =
  31. 31.84 × 5 =
  32. 32.20 × 5 =
  33. 33.22 × 5 =
  34. 34.96 × 50 =
  35. 35.23 × 50 =
  36. 36.67 × 50 =
  37. 37.34 × 5 =
  38. 38.84 × 50 =
  39. 39.60 × 5 =
  40. 40.33 × 5 =

Answer key

  1. 220
  2. 3400
  3. 70
  4. 260
  5. 4750
  6. 235
  7. 2250
  8. 245
  9. 2900
  10. 245
  11. 445
  12. 650
  13. 2650
  14. 315
  15. 380
  16. 210
  17. 2850
  18. 4900
  19. 1400
  20. 4050
  21. 475
  22. 420
  23. 490
  24. 3150
  25. 1150
  26. 4000
  27. 215
  28. 650
  29. 2500
  30. 3500
  31. 420
  32. 100
  33. 110
  34. 4800
  35. 1150
  36. 3350
  37. 170
  38. 4200
  39. 300
  40. 165

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