Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 901 · 40 questions

The trick (Count the places): Forget the points and multiply the whole numbers. Count all the digits after the points in the question. Put the point that many places from the right, then check by rounding.

1. 1.0.79 × 0.6 — where does the decimal point go? (a) 0.00474 (b) 0.0474 (c) 0.474 (d) 4.74
2. 2.6.9 × 9 — where does the decimal point go? (a) 6.21 (b) 0.621 (c) 62.1 (d) 621
3. 3.0.69 × 6 — where does the decimal point go? (a) 41.4 (b) 4.14 (c) 0.414 (d) 0.0414
4. 4.2.9 × 1.1 — where does the decimal point go? (a) 0.0319 (b) 31.9 (c) 3.19 (d) 0.319
5. 5.0.36 × 3.6 — where does the decimal point go? (a) 1.296 (b) 12.96 (c) 0.1296 (d) 0.01296
6. 6.0.83 × 0.4 — where does the decimal point go? (a) 0.332 (b) 0.0332 (c) 3.32 (d) 0.00332
7. 7.0.36 × 2.8 — where does the decimal point go? (a) 0.1008 (b) 1.008 (c) 10.08 (d) 0.01008
8. 8.0.46 × 37 — where does the decimal point go? (a) 17.02 (b) 170.2 (c) 0.1702 (d) 1.702
9. 9.0.63 × 0.9 — where does the decimal point go? (a) 0.00567 (b) 0.567 (c) 0.0567 (d) 5.67
10. 10.9.8 × 4 — where does the decimal point go? (a) 3.92 (b) 0.392 (c) 392 (d) 39.2
11. 11.1.6 × 26 — where does the decimal point go? (a) 416 (b) 0.416 (c) 4.16 (d) 41.6
12. 12.0.61 × 14 — where does the decimal point go? (a) 0.854 (b) 85.4 (c) 0.0854 (d) 8.54
13. 13.8.4 × 4 — where does the decimal point go? (a) 33.6 (b) 3.36 (c) 0.336 (d) 336
14. 14.6.8 × 33 — where does the decimal point go? (a) 22.44 (b) 2.244 (c) 2244 (d) 224.4
15. 15.8.1 × 38 — where does the decimal point go? (a) 307.8 (b) 3.078 (c) 30.78 (d) 3078
16. 16.0.16 × 0.2 — where does the decimal point go? (a) 0.00032 (b) 0.32 (c) 0.0032 (d) 0.032
17. 17.6.8 × 0.9 — where does the decimal point go? (a) 6.12 (b) 0.0612 (c) 0.612 (d) 61.2
18. 18.0.32 × 0.7 — where does the decimal point go? (a) 0.224 (b) 0.00224 (c) 0.0224 (d) 2.24
19. 19.9.3 × 5 — where does the decimal point go? (a) 0.465 (b) 4.65 (c) 465 (d) 46.5
20. 20.8.7 × 0.6 — where does the decimal point go? (a) 5.22 (b) 0.0522 (c) 0.522 (d) 52.2
21. 21.4.6 × 0.8 — where does the decimal point go? (a) 0.368 (b) 3.68 (c) 0.0368 (d) 36.8
22. 22.0.19 × 19 — where does the decimal point go? (a) 0.0361 (b) 0.361 (c) 36.1 (d) 3.61
23. 23.0.88 × 0.8 — where does the decimal point go? (a) 7.04 (b) 0.704 (c) 0.00704 (d) 0.0704
24. 24.0.26 × 3 — where does the decimal point go? (a) 0.78 (b) 7.8 (c) 0.0078 (d) 0.078
25. 25.4.7 × 4 — where does the decimal point go? (a) 1.88 (b) 0.188 (c) 188 (d) 18.8
26. 26.4.1 × 29 — where does the decimal point go? (a) 11.89 (b) 118.9 (c) 1.189 (d) 1189
27. 27.6.8 × 0.3 — where does the decimal point go? (a) 0.0204 (b) 2.04 (c) 20.4 (d) 0.204
28. 28.5.9 × 6 — where does the decimal point go? (a) 3.54 (b) 35.4 (c) 354 (d) 0.354
29. 29.0.15 × 0.3 — where does the decimal point go? (a) 0.045 (b) 0.45 (c) 0.00045 (d) 0.0045
30. 30.0.96 × 3 — where does the decimal point go? (a) 0.288 (b) 2.88 (c) 28.8 (d) 0.0288
31. 31.0.57 × 3.4 — where does the decimal point go? (a) 0.1938 (b) 0.01938 (c) 19.38 (d) 1.938
32. 32.7.8 × 3.9 — where does the decimal point go? (a) 0.3042 (b) 30.42 (c) 3.042 (d) 304.2
33. 33.0.46 × 6 — where does the decimal point go? (a) 0.276 (b) 0.0276 (c) 2.76 (d) 27.6
34. 34.9.9 × 4.8 — where does the decimal point go? (a) 0.4752 (b) 47.52 (c) 4.752 (d) 475.2
35. 35.0.84 × 0.2 — where does the decimal point go? (a) 0.0168 (b) 0.00168 (c) 1.68 (d) 0.168
36. 36.0.62 × 0.6 — where does the decimal point go? (a) 3.72 (b) 0.0372 (c) 0.00372 (d) 0.372
37. 37.2.3 × 0.8 — where does the decimal point go? (a) 0.184 (b) 1.84 (c) 18.4 (d) 0.0184
38. 38.3.3 × 45 — where does the decimal point go? (a) 14.85 (b) 1485 (c) 148.5 (d) 1.485
39. 39.4.6 × 2.2 — where does the decimal point go? (a) 0.1012 (b) 10.12 (c) 1.012 (d) 101.2
40. 40.3.4 × 16 — where does the decimal point go? (a) 5.44 (b) 54.4 (c) 0.544 (d) 544

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