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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 74 · 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. 1.22 × 50 =
  2. 2.69 × 5 =
  3. 3.25 × 5 =
  4. 4.34 × 50 =
  5. 5.28 × 50 =
  6. 6.54 × 5 =
  7. 7.52 × 5 =
  8. 8.77 × 5 =
  9. 9.26 × 5 =
  10. 10.23 × 5 =
  11. 11.22 × 50 =
  12. 12.67 × 5 =
  13. 13.21 × 50 =
  14. 14.98 × 50 =
  15. 15.84 × 5 =
  16. 16.95 × 5 =
  17. 17.92 × 5 =
  18. 18.93 × 50 =
  19. 19.35 × 50 =
  20. 20.51 × 5 =
  21. 21.68 × 50 =
  22. 22.46 × 5 =
  23. 23.31 × 5 =
  24. 24.44 × 5 =
  25. 25.81 × 5 =
  26. 26.84 × 50 =
  27. 27.65 × 5 =
  28. 28.45 × 50 =
  29. 29.44 × 5 =
  30. 30.52 × 5 =
  31. 31.40 × 50 =
  32. 32.89 × 5 =
  33. 33.74 × 5 =
  34. 34.43 × 5 =
  35. 35.22 × 50 =
  36. 36.23 × 5 =
  37. 37.31 × 50 =
  38. 38.65 × 50 =
  39. 39.81 × 5 =
  40. 40.37 × 50 =

Answer key

  1. 1100
  2. 345
  3. 125
  4. 1700
  5. 1400
  6. 270
  7. 260
  8. 385
  9. 130
  10. 115
  11. 1100
  12. 335
  13. 1050
  14. 4900
  15. 420
  16. 475
  17. 460
  18. 4650
  19. 1750
  20. 255
  21. 3400
  22. 230
  23. 155
  24. 220
  25. 405
  26. 4200
  27. 325
  28. 2250
  29. 220
  30. 260
  31. 2000
  32. 445
  33. 370
  34. 215
  35. 1100
  36. 115
  37. 1550
  38. 3250
  39. 405
  40. 1850

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