Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 744 · 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. 1.0.29 × 0.7 — where does the decimal point go? (a) 0.203 (b) 0.0203 (c) 2.03 (d) 0.00203
2. 2.5.9 × 3 — where does the decimal point go? (a) 177 (b) 17.7 (c) 1.77 (d) 0.177
3. 3.0.67 × 5 — where does the decimal point go? (a) 0.335 (b) 0.0335 (c) 3.35 (d) 33.5
4. 4.0.86 × 0.3 — where does the decimal point go? (a) 0.0258 (b) 2.58 (c) 0.00258 (d) 0.258
5. 5.0.21 × 4.4 — where does the decimal point go? (a) 0.924 (b) 0.0924 (c) 9.24 (d) 0.00924
6. 6.0.62 × 6 — where does the decimal point go? (a) 0.0372 (b) 37.2 (c) 3.72 (d) 0.372
7. 7.6.8 × 4.6 — where does the decimal point go? (a) 3.128 (b) 0.3128 (c) 312.8 (d) 31.28
8. 8.0.63 × 8 — where does the decimal point go? (a) 0.0504 (b) 5.04 (c) 0.504 (d) 50.4
9. 9.5.2 × 0.3 — where does the decimal point go? (a) 0.156 (b) 1.56 (c) 0.0156 (d) 15.6
10. 10.2.8 × 2.8 — where does the decimal point go? (a) 7.84 (b) 0.784 (c) 0.0784 (d) 78.4
11. 11.0.57 × 0.4 — where does the decimal point go? (a) 0.228 (b) 0.0228 (c) 0.00228 (d) 2.28
12. 12.4.6 × 8 — where does the decimal point go? (a) 3.68 (b) 36.8 (c) 0.368 (d) 368
13. 13.1.3 × 12 — where does the decimal point go? (a) 0.156 (b) 15.6 (c) 1.56 (d) 156
14. 14.7.3 × 3.7 — where does the decimal point go? (a) 2.701 (b) 270.1 (c) 27.01 (d) 0.2701
15. 15.0.83 × 1.6 — where does the decimal point go? (a) 0.01328 (b) 0.1328 (c) 13.28 (d) 1.328
16. 16.0.31 × 0.9 — where does the decimal point go? (a) 2.79 (b) 0.0279 (c) 0.279 (d) 0.00279
17. 17.3.4 × 4.2 — where does the decimal point go? (a) 142.8 (b) 14.28 (c) 1.428 (d) 0.1428
18. 18.1.5 × 3.1 — where does the decimal point go? (a) 4.65 (b) 0.465 (c) 0.0465 (d) 46.5
19. 19.8.6 × 3.9 — where does the decimal point go? (a) 335.4 (b) 0.3354 (c) 33.54 (d) 3.354
20. 20.0.61 × 6 — where does the decimal point go? (a) 36.6 (b) 3.66 (c) 0.0366 (d) 0.366
21. 21.0.86 × 2 — where does the decimal point go? (a) 0.172 (b) 1.72 (c) 0.0172 (d) 17.2
22. 22.9.9 × 2.6 — where does the decimal point go? (a) 2.574 (b) 25.74 (c) 257.4 (d) 0.2574
23. 23.0.78 × 2 — where does the decimal point go? (a) 0.0156 (b) 1.56 (c) 0.156 (d) 15.6
24. 24.9.2 × 49 — where does the decimal point go? (a) 4.508 (b) 4508 (c) 45.08 (d) 450.8
25. 25.0.72 × 2.6 — where does the decimal point go? (a) 18.72 (b) 1.872 (c) 0.1872 (d) 0.01872
26. 26.9.4 × 4 — where does the decimal point go? (a) 0.376 (b) 3.76 (c) 37.6 (d) 376
27. 27.0.87 × 4 — where does the decimal point go? (a) 3.48 (b) 0.0348 (c) 34.8 (d) 0.348
28. 28.0.73 × 0.3 — where does the decimal point go? (a) 0.219 (b) 0.00219 (c) 0.0219 (d) 2.19
29. 29.7.3 × 42 — where does the decimal point go? (a) 3.066 (b) 30.66 (c) 306.6 (d) 3066
30. 30.6.1 × 25 — where does the decimal point go? (a) 1.525 (b) 15.25 (c) 152.5 (d) 1525
31. 31.2.7 × 16 — where does the decimal point go? (a) 4.32 (b) 432 (c) 0.432 (d) 43.2
32. 32.8.9 × 0.2 — where does the decimal point go? (a) 0.0178 (b) 17.8 (c) 1.78 (d) 0.178
33. 33.0.34 × 0.3 — where does the decimal point go? (a) 1.02 (b) 0.102 (c) 0.0102 (d) 0.00102
34. 34.7.7 × 11 — where does the decimal point go? (a) 84.7 (b) 8.47 (c) 0.847 (d) 847
35. 35.5.4 × 14 — where does the decimal point go? (a) 75.6 (b) 7.56 (c) 756 (d) 0.756
36. 36.4.4 × 4 — where does the decimal point go? (a) 17.6 (b) 176 (c) 0.176 (d) 1.76
37. 37.0.58 × 0.7 — where does the decimal point go? (a) 0.0406 (b) 4.06 (c) 0.406 (d) 0.00406
38. 38.0.12 × 3 — where does the decimal point go? (a) 0.0036 (b) 0.036 (c) 3.6 (d) 0.36
39. 39.2.9 × 0.2 — where does the decimal point go? (a) 0.0058 (b) 0.58 (c) 0.058 (d) 5.8
40. 40.3.7 × 0.6 — where does the decimal point go? (a) 0.0222 (b) 22.2 (c) 2.22 (d) 0.222

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