Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 615 · 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. 1.88 × 5 =
2. 2.58 × 5 =
3. 3.45 × 5 =
4. 4.19 × 50 =
5. 5.82 × 50 =
6. 6.29 × 50 =
7. 7.58 × 5 =
8. 8.48 × 50 =
9. 9.40 × 5 =
10. 10.41 × 5 =
11. 11.24 × 50 =
12. 12.79 × 5 =
13. 13.42 × 50 =
14. 14.93 × 50 =
15. 15.72 × 5 =
16. 16.96 × 50 =
17. 17.86 × 5 =
18. 18.57 × 50 =
19. 19.53 × 50 =
20. 20.19 × 5 =
21. 21.75 × 50 =
22. 22.59 × 50 =
23. 23.95 × 50 =
24. 24.96 × 50 =
25. 25.32 × 50 =
26. 26.78 × 50 =
27. 27.56 × 50 =
28. 28.41 × 5 =
29. 29.57 × 50 =
30. 30.63 × 50 =
31. 31.34 × 50 =
32. 32.66 × 50 =
33. 33.25 × 50 =
34. 34.86 × 50 =
35. 35.38 × 50 =
36. 36.42 × 5 =
37. 37.34 × 5 =
38. 38.18 × 5 =
39. 39.47 × 5 =
40. 40.20 × 50 =

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