Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 381 · 40 questions

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.

1. 1.87 × 50 =
2. 2.97 × 5 =
3. 3.17 × 50 =
4. 4.83 × 50 =
5. 5.25 × 50 =
6. 6.45 × 50 =
7. 7.75 × 50 =
8. 8.20 × 5 =
9. 9.70 × 50 =
10. 10.82 × 5 =
11. 11.40 × 5 =
12. 12.56 × 5 =
13. 13.67 × 50 =
14. 14.38 × 50 =
15. 15.43 × 5 =
16. 16.63 × 5 =
17. 17.23 × 50 =
18. 18.90 × 50 =
19. 19.35 × 5 =
20. 20.18 × 5 =
21. 21.64 × 5 =
22. 22.29 × 5 =
23. 23.44 × 5 =
24. 24.29 × 50 =
25. 25.62 × 5 =
26. 26.30 × 5 =
27. 27.60 × 50 =
28. 28.17 × 50 =
29. 29.88 × 5 =
30. 30.66 × 50 =
31. 31.55 × 50 =
32. 32.23 × 5 =
33. 33.34 × 5 =
34. 34.98 × 5 =
35. 35.16 × 5 =
36. 36.52 × 50 =
37. 37.93 × 50 =
38. 38.62 × 5 =
39. 39.21 × 5 =
40. 40.16 × 50 =

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