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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 449 · 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. 1.71 × 5 =
  2. 2.52 × 5 =
  3. 3.33 × 5 =
  4. 4.16 × 5 =
  5. 5.94 × 50 =
  6. 6.48 × 50 =
  7. 7.62 × 5 =
  8. 8.87 × 50 =
  9. 9.30 × 5 =
  10. 10.24 × 5 =
  11. 11.39 × 5 =
  12. 12.90 × 5 =
  13. 13.85 × 50 =
  14. 14.60 × 5 =
  15. 15.26 × 5 =
  16. 16.73 × 5 =
  17. 17.51 × 50 =
  18. 18.44 × 5 =
  19. 19.47 × 5 =
  20. 20.48 × 5 =
  21. 21.97 × 50 =
  22. 22.67 × 5 =
  23. 23.74 × 5 =
  24. 24.43 × 5 =
  25. 25.91 × 5 =
  26. 26.88 × 50 =
  27. 27.44 × 5 =
  28. 28.34 × 50 =
  29. 29.63 × 5 =
  30. 30.27 × 5 =
  31. 31.93 × 5 =
  32. 32.85 × 5 =
  33. 33.47 × 50 =
  34. 34.30 × 50 =
  35. 35.58 × 5 =
  36. 36.38 × 5 =
  37. 37.29 × 50 =
  38. 38.22 × 50 =
  39. 39.45 × 5 =
  40. 40.64 × 5 =

Answer key

  1. 355
  2. 260
  3. 165
  4. 80
  5. 4700
  6. 2400
  7. 310
  8. 4350
  9. 150
  10. 120
  11. 195
  12. 450
  13. 4250
  14. 300
  15. 130
  16. 365
  17. 2550
  18. 220
  19. 235
  20. 240
  21. 4850
  22. 335
  23. 370
  24. 215
  25. 455
  26. 4400
  27. 220
  28. 1700
  29. 315
  30. 135
  31. 465
  32. 425
  33. 2350
  34. 1500
  35. 290
  36. 190
  37. 1450
  38. 1100
  39. 225
  40. 320

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