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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 603 · 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. 1.53 × 5 =
  2. 2.86 × 50 =
  3. 3.90 × 50 =
  4. 4.77 × 5 =
  5. 5.72 × 50 =
  6. 6.55 × 50 =
  7. 7.49 × 50 =
  8. 8.17 × 50 =
  9. 9.92 × 50 =
  10. 10.34 × 50 =
  11. 11.15 × 50 =
  12. 12.78 × 50 =
  13. 13.98 × 5 =
  14. 14.45 × 50 =
  15. 15.88 × 50 =
  16. 16.66 × 50 =
  17. 17.30 × 5 =
  18. 18.27 × 50 =
  19. 19.74 × 5 =
  20. 20.52 × 5 =
  21. 21.51 × 50 =
  22. 22.51 × 5 =
  23. 23.65 × 50 =
  24. 24.84 × 5 =
  25. 25.63 × 50 =
  26. 26.73 × 50 =
  27. 27.20 × 50 =
  28. 28.62 × 50 =
  29. 29.64 × 50 =
  30. 30.33 × 50 =
  31. 31.18 × 50 =
  32. 32.27 × 50 =
  33. 33.60 × 5 =
  34. 34.15 × 5 =
  35. 35.46 × 50 =
  36. 36.21 × 5 =
  37. 37.61 × 50 =
  38. 38.96 × 5 =
  39. 39.60 × 5 =
  40. 40.33 × 5 =

Answer key

  1. 265
  2. 4300
  3. 4500
  4. 385
  5. 3600
  6. 2750
  7. 2450
  8. 850
  9. 4600
  10. 1700
  11. 750
  12. 3900
  13. 490
  14. 2250
  15. 4400
  16. 3300
  17. 150
  18. 1350
  19. 370
  20. 260
  21. 2550
  22. 255
  23. 3250
  24. 420
  25. 3150
  26. 3650
  27. 1000
  28. 3100
  29. 3200
  30. 1650
  31. 900
  32. 1350
  33. 300
  34. 75
  35. 2300
  36. 105
  37. 3050
  38. 480
  39. 300
  40. 165

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