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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 399 · 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. 1.45 × 5 =
  2. 2.77 × 5 =
  3. 3.26 × 50 =
  4. 4.67 × 5 =
  5. 5.56 × 5 =
  6. 6.60 × 50 =
  7. 7.39 × 5 =
  8. 8.40 × 5 =
  9. 9.43 × 50 =
  10. 10.54 × 50 =
  11. 11.47 × 50 =
  12. 12.23 × 50 =
  13. 13.33 × 5 =
  14. 14.56 × 5 =
  15. 15.51 × 50 =
  16. 16.62 × 5 =
  17. 17.20 × 5 =
  18. 18.21 × 50 =
  19. 19.28 × 50 =
  20. 20.62 × 5 =
  21. 21.26 × 5 =
  22. 22.74 × 5 =
  23. 23.50 × 5 =
  24. 24.46 × 50 =
  25. 25.41 × 50 =
  26. 26.40 × 5 =
  27. 27.23 × 5 =
  28. 28.28 × 50 =
  29. 29.87 × 5 =
  30. 30.35 × 5 =
  31. 31.59 × 5 =
  32. 32.63 × 5 =
  33. 33.89 × 5 =
  34. 34.14 × 5 =
  35. 35.21 × 50 =
  36. 36.50 × 5 =
  37. 37.28 × 5 =
  38. 38.29 × 50 =
  39. 39.33 × 5 =
  40. 40.29 × 50 =

Answer key

  1. 225
  2. 385
  3. 1300
  4. 335
  5. 280
  6. 3000
  7. 195
  8. 200
  9. 2150
  10. 2700
  11. 2350
  12. 1150
  13. 165
  14. 280
  15. 2550
  16. 310
  17. 100
  18. 1050
  19. 1400
  20. 310
  21. 130
  22. 370
  23. 250
  24. 2300
  25. 2050
  26. 200
  27. 115
  28. 1400
  29. 435
  30. 175
  31. 295
  32. 315
  33. 445
  34. 70
  35. 1050
  36. 250
  37. 140
  38. 1450
  39. 165
  40. 1450

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