Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 479 · 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. 1.48 × 5 =
2. 2.49 × 50 =
3. 3.45 × 5 =
4. 4.54 × 50 =
5. 5.14 × 5 =
6. 6.63 × 5 =
7. 7.63 × 5 =
8. 8.28 × 5 =
9. 9.85 × 50 =
10. 10.15 × 50 =
11. 11.60 × 5 =
12. 12.22 × 5 =
13. 13.87 × 5 =
14. 14.45 × 5 =
15. 15.64 × 50 =
16. 16.45 × 5 =
17. 17.46 × 5 =
18. 18.43 × 5 =
19. 19.75 × 5 =
20. 20.76 × 5 =
21. 21.89 × 5 =
22. 22.38 × 5 =
23. 23.81 × 5 =
24. 24.77 × 5 =
25. 25.74 × 50 =
26. 26.45 × 5 =
27. 27.15 × 5 =
28. 28.92 × 50 =
29. 29.67 × 50 =
30. 30.81 × 5 =
31. 31.67 × 5 =
32. 32.64 × 50 =
33. 33.71 × 5 =
34. 34.66 × 50 =
35. 35.62 × 50 =
36. 36.35 × 50 =
37. 37.60 × 5 =
38. 38.76 × 5 =
39. 39.12 × 5 =
40. 40.65 × 5 =

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