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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 807 · 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. 1.80 × 50 =
  2. 2.93 × 50 =
  3. 3.65 × 5 =
  4. 4.84 × 50 =
  5. 5.74 × 50 =
  6. 6.82 × 50 =
  7. 7.37 × 5 =
  8. 8.14 × 50 =
  9. 9.56 × 50 =
  10. 10.40 × 5 =
  11. 11.16 × 50 =
  12. 12.94 × 50 =
  13. 13.96 × 50 =
  14. 14.34 × 5 =
  15. 15.41 × 50 =
  16. 16.20 × 5 =
  17. 17.14 × 50 =
  18. 18.74 × 50 =
  19. 19.68 × 5 =
  20. 20.26 × 5 =
  21. 21.94 × 5 =
  22. 22.72 × 50 =
  23. 23.33 × 5 =
  24. 24.32 × 5 =
  25. 25.19 × 50 =
  26. 26.67 × 5 =
  27. 27.38 × 50 =
  28. 28.22 × 5 =
  29. 29.52 × 5 =
  30. 30.52 × 5 =
  31. 31.40 × 5 =
  32. 32.70 × 5 =
  33. 33.74 × 50 =
  34. 34.29 × 5 =
  35. 35.22 × 5 =
  36. 36.92 × 5 =
  37. 37.33 × 50 =
  38. 38.62 × 50 =
  39. 39.93 × 5 =
  40. 40.78 × 50 =

Answer key

  1. 4000
  2. 4650
  3. 325
  4. 4200
  5. 3700
  6. 4100
  7. 185
  8. 700
  9. 2800
  10. 200
  11. 800
  12. 4700
  13. 4800
  14. 170
  15. 2050
  16. 100
  17. 700
  18. 3700
  19. 340
  20. 130
  21. 470
  22. 3600
  23. 165
  24. 160
  25. 950
  26. 335
  27. 1900
  28. 110
  29. 260
  30. 260
  31. 200
  32. 350
  33. 3700
  34. 145
  35. 110
  36. 460
  37. 1650
  38. 3100
  39. 465
  40. 3900

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