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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 707 · 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. 1.58 × 5 =
  2. 2.41 × 50 =
  3. 3.61 × 5 =
  4. 4.17 × 50 =
  5. 5.21 × 50 =
  6. 6.55 × 50 =
  7. 7.91 × 5 =
  8. 8.43 × 5 =
  9. 9.86 × 5 =
  10. 10.42 × 50 =
  11. 11.91 × 50 =
  12. 12.73 × 50 =
  13. 13.51 × 5 =
  14. 14.31 × 5 =
  15. 15.70 × 5 =
  16. 16.65 × 50 =
  17. 17.28 × 50 =
  18. 18.27 × 5 =
  19. 19.95 × 50 =
  20. 20.91 × 50 =
  21. 21.37 × 5 =
  22. 22.40 × 50 =
  23. 23.26 × 5 =
  24. 24.69 × 50 =
  25. 25.47 × 5 =
  26. 26.15 × 5 =
  27. 27.18 × 5 =
  28. 28.22 × 50 =
  29. 29.57 × 50 =
  30. 30.96 × 5 =
  31. 31.25 × 5 =
  32. 32.61 × 50 =
  33. 33.12 × 5 =
  34. 34.50 × 5 =
  35. 35.21 × 50 =
  36. 36.94 × 50 =
  37. 37.55 × 5 =
  38. 38.45 × 50 =
  39. 39.44 × 5 =
  40. 40.55 × 50 =

Answer key

  1. 290
  2. 2050
  3. 305
  4. 850
  5. 1050
  6. 2750
  7. 455
  8. 215
  9. 430
  10. 2100
  11. 4550
  12. 3650
  13. 255
  14. 155
  15. 350
  16. 3250
  17. 1400
  18. 135
  19. 4750
  20. 4550
  21. 185
  22. 2000
  23. 130
  24. 3450
  25. 235
  26. 75
  27. 90
  28. 1100
  29. 2850
  30. 480
  31. 125
  32. 3050
  33. 60
  34. 250
  35. 1050
  36. 4700
  37. 275
  38. 2250
  39. 220
  40. 2750

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