Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 322 · 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. 1.0.27 × 25 — where does the decimal point go? (a) 0.0675 (b) 6.75 (c) 67.5 (d) 0.675
2. 2.0.87 × 15 — where does the decimal point go? (a) 0.1305 (b) 130.5 (c) 13.05 (d) 1.305
3. 3.6.7 × 3 — where does the decimal point go? (a) 201 (b) 20.1 (c) 2.01 (d) 0.201
4. 4.5.7 × 0.9 — where does the decimal point go? (a) 0.0513 (b) 0.513 (c) 51.3 (d) 5.13
5. 5.2.7 × 1.3 — where does the decimal point go? (a) 0.351 (b) 3.51 (c) 35.1 (d) 0.0351
6. 6.0.44 × 8 — where does the decimal point go? (a) 3.52 (b) 0.0352 (c) 0.352 (d) 35.2
7. 7.0.64 × 1.3 — where does the decimal point go? (a) 0.0832 (b) 0.832 (c) 8.32 (d) 0.00832
8. 8.6.1 × 9 — where does the decimal point go? (a) 549 (b) 0.549 (c) 5.49 (d) 54.9
9. 9.2.7 × 0.2 — where does the decimal point go? (a) 0.54 (b) 0.0054 (c) 0.054 (d) 5.4
10. 10.2.4 × 33 — where does the decimal point go? (a) 0.792 (b) 79.2 (c) 7.92 (d) 792
11. 11.2.8 × 3 — where does the decimal point go? (a) 8.4 (b) 0.084 (c) 0.84 (d) 84
12. 12.0.77 × 4.5 — where does the decimal point go? (a) 0.03465 (b) 3.465 (c) 34.65 (d) 0.3465
13. 13.0.83 × 16 — where does the decimal point go? (a) 0.1328 (b) 1.328 (c) 132.8 (d) 13.28
14. 14.0.48 × 6 — where does the decimal point go? (a) 0.288 (b) 28.8 (c) 0.0288 (d) 2.88
15. 15.5.7 × 9 — where does the decimal point go? (a) 51.3 (b) 513 (c) 0.513 (d) 5.13
16. 16.7.1 × 0.2 — where does the decimal point go? (a) 1.42 (b) 0.142 (c) 0.0142 (d) 14.2
17. 17.9.6 × 0.8 — where does the decimal point go? (a) 7.68 (b) 0.768 (c) 76.8 (d) 0.0768
18. 18.9.7 × 17 — where does the decimal point go? (a) 164.9 (b) 16.49 (c) 1.649 (d) 1649
19. 19.0.89 × 0.3 — where does the decimal point go? (a) 0.267 (b) 0.0267 (c) 0.00267 (d) 2.67
20. 20.3.7 × 19 — where does the decimal point go? (a) 7.03 (b) 703 (c) 70.3 (d) 0.703
21. 21.8.3 × 15 — where does the decimal point go? (a) 124.5 (b) 12.45 (c) 1245 (d) 1.245
22. 22.0.99 × 4 — where does the decimal point go? (a) 0.0396 (b) 39.6 (c) 3.96 (d) 0.396
23. 23.5.4 × 41 — where does the decimal point go? (a) 2214 (b) 221.4 (c) 22.14 (d) 2.214
24. 24.4.9 × 37 — where does the decimal point go? (a) 1813 (b) 1.813 (c) 18.13 (d) 181.3
25. 25.1.6 × 0.7 — where does the decimal point go? (a) 1.12 (b) 0.112 (c) 11.2 (d) 0.0112
26. 26.8.3 × 2.7 — where does the decimal point go? (a) 0.2241 (b) 224.1 (c) 2.241 (d) 22.41
27. 27.1.4 × 0.4 — where does the decimal point go? (a) 0.056 (b) 0.56 (c) 5.6 (d) 0.0056
28. 28.0.82 × 3 — where does the decimal point go? (a) 0.246 (b) 24.6 (c) 2.46 (d) 0.0246
29. 29.0.78 × 3.3 — where does the decimal point go? (a) 2.574 (b) 0.2574 (c) 25.74 (d) 0.02574
30. 30.4.7 × 7 — where does the decimal point go? (a) 3.29 (b) 329 (c) 0.329 (d) 32.9
31. 31.8.1 × 1.1 — where does the decimal point go? (a) 0.891 (b) 8.91 (c) 89.1 (d) 0.0891
32. 32.0.69 × 41 — where does the decimal point go? (a) 0.2829 (b) 28.29 (c) 2.829 (d) 282.9
33. 33.2.1 × 2 — where does the decimal point go? (a) 0.42 (b) 0.042 (c) 4.2 (d) 42
34. 34.2.8 × 3.7 — where does the decimal point go? (a) 103.6 (b) 1.036 (c) 10.36 (d) 0.1036
35. 35.0.77 × 9 — where does the decimal point go? (a) 0.693 (b) 0.0693 (c) 6.93 (d) 69.3
36. 36.6.3 × 0.8 — where does the decimal point go? (a) 0.0504 (b) 50.4 (c) 5.04 (d) 0.504
37. 37.5.4 × 44 — where does the decimal point go? (a) 2376 (b) 2.376 (c) 23.76 (d) 237.6
38. 38.5.6 × 9 — where does the decimal point go? (a) 5.04 (b) 0.504 (c) 50.4 (d) 504
39. 39.0.32 × 33 — where does the decimal point go? (a) 105.6 (b) 10.56 (c) 1.056 (d) 0.1056
40. 40.0.78 × 29 — where does the decimal point go? (a) 22.62 (b) 226.2 (c) 0.2262 (d) 2.262

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