Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 482 · 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. 1.83 × 50 =
2. 2.79 × 50 =
3. 3.17 × 5 =
4. 4.89 × 5 =
5. 5.15 × 5 =
6. 6.16 × 50 =
7. 7.68 × 5 =
8. 8.98 × 5 =
9. 9.21 × 5 =
10. 10.89 × 5 =
11. 11.20 × 50 =
12. 12.94 × 5 =
13. 13.17 × 5 =
14. 14.22 × 5 =
15. 15.52 × 50 =
16. 16.61 × 5 =
17. 17.85 × 50 =
18. 18.50 × 50 =
19. 19.29 × 5 =
20. 20.25 × 5 =
21. 21.84 × 5 =
22. 22.34 × 50 =
23. 23.13 × 5 =
24. 24.84 × 5 =
25. 25.67 × 5 =
26. 26.20 × 5 =
27. 27.84 × 5 =
28. 28.20 × 50 =
29. 29.96 × 5 =
30. 30.96 × 5 =
31. 31.55 × 50 =
32. 32.53 × 5 =
33. 33.18 × 5 =
34. 34.77 × 5 =
35. 35.40 × 50 =
36. 36.54 × 5 =
37. 37.30 × 5 =
38. 38.76 × 5 =
39. 39.46 × 5 =
40. 40.36 × 50 =

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