Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 439 · 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. 1.0.96 × 27 — where does the decimal point go? (a) 259.2 (b) 2.592 (c) 0.2592 (d) 25.92
2. 2.0.18 × 0.6 — where does the decimal point go? (a) 0.108 (b) 1.08 (c) 0.0108 (d) 0.00108
3. 3.3.6 × 0.9 — where does the decimal point go? (a) 32.4 (b) 0.0324 (c) 0.324 (d) 3.24
4. 4.0.96 × 0.8 — where does the decimal point go? (a) 7.68 (b) 0.768 (c) 0.00768 (d) 0.0768
5. 5.7.9 × 0.4 — where does the decimal point go? (a) 0.316 (b) 0.0316 (c) 3.16 (d) 31.6
6. 6.0.77 × 2.9 — where does the decimal point go? (a) 0.02233 (b) 0.2233 (c) 2.233 (d) 22.33
7. 7.0.93 × 4.4 — where does the decimal point go? (a) 0.04092 (b) 4.092 (c) 40.92 (d) 0.4092
8. 8.0.93 × 1.4 — where does the decimal point go? (a) 1.302 (b) 0.01302 (c) 13.02 (d) 0.1302
9. 9.0.92 × 6 — where does the decimal point go? (a) 0.552 (b) 55.2 (c) 0.0552 (d) 5.52
10. 10.1.8 × 0.6 — where does the decimal point go? (a) 0.108 (b) 1.08 (c) 0.0108 (d) 10.8
11. 11.4.9 × 4.8 — where does the decimal point go? (a) 235.2 (b) 23.52 (c) 0.2352 (d) 2.352
12. 12.0.51 × 39 — where does the decimal point go? (a) 19.89 (b) 198.9 (c) 1.989 (d) 0.1989
13. 13.9.8 × 0.4 — where does the decimal point go? (a) 0.0392 (b) 39.2 (c) 3.92 (d) 0.392
14. 14.0.68 × 0.6 — where does the decimal point go? (a) 0.0408 (b) 0.408 (c) 0.00408 (d) 4.08
15. 15.0.84 × 1.1 — where does the decimal point go? (a) 9.24 (b) 0.0924 (c) 0.924 (d) 0.00924
16. 16.3.8 × 0.2 — where does the decimal point go? (a) 0.76 (b) 7.6 (c) 0.0076 (d) 0.076
17. 17.0.66 × 1.8 — where does the decimal point go? (a) 11.88 (b) 0.1188 (c) 1.188 (d) 0.01188
18. 18.7.9 × 2.4 — where does the decimal point go? (a) 0.1896 (b) 18.96 (c) 189.6 (d) 1.896
19. 19.0.29 × 9 — where does the decimal point go? (a) 2.61 (b) 0.0261 (c) 0.261 (d) 26.1
20. 20.9.9 × 3 — where does the decimal point go? (a) 2.97 (b) 0.297 (c) 29.7 (d) 297
21. 21.7.3 × 3 — where does the decimal point go? (a) 2.19 (b) 21.9 (c) 219 (d) 0.219
22. 22.0.43 × 0.6 — where does the decimal point go? (a) 0.258 (b) 0.00258 (c) 2.58 (d) 0.0258
23. 23.0.25 × 0.9 — where does the decimal point go? (a) 2.25 (b) 0.225 (c) 0.0225 (d) 0.00225
24. 24.3.7 × 35 — where does the decimal point go? (a) 129.5 (b) 1.295 (c) 12.95 (d) 1295
25. 25.0.53 × 23 — where does the decimal point go? (a) 1.219 (b) 121.9 (c) 12.19 (d) 0.1219
26. 26.3.1 × 5 — where does the decimal point go? (a) 0.155 (b) 1.55 (c) 155 (d) 15.5
27. 27.0.23 × 43 — where does the decimal point go? (a) 98.9 (b) 0.989 (c) 9.89 (d) 0.0989
28. 28.1.8 × 0.9 — where does the decimal point go? (a) 0.162 (b) 1.62 (c) 16.2 (d) 0.0162
29. 29.9.3 × 4.1 — where does the decimal point go? (a) 38.13 (b) 3.813 (c) 0.3813 (d) 381.3
30. 30.0.79 × 48 — where does the decimal point go? (a) 37.92 (b) 379.2 (c) 0.3792 (d) 3.792
31. 31.0.12 × 17 — where does the decimal point go? (a) 2.04 (b) 20.4 (c) 0.204 (d) 0.0204
32. 32.6.2 × 3 — where does the decimal point go? (a) 18.6 (b) 1.86 (c) 186 (d) 0.186
33. 33.0.22 × 9 — where does the decimal point go? (a) 1.98 (b) 0.0198 (c) 19.8 (d) 0.198
34. 34.0.22 × 0.8 — where does the decimal point go? (a) 0.00176 (b) 1.76 (c) 0.0176 (d) 0.176
35. 35.1.3 × 0.2 — where does the decimal point go? (a) 0.026 (b) 0.0026 (c) 0.26 (d) 2.6
36. 36.0.52 × 3.1 — where does the decimal point go? (a) 0.01612 (b) 16.12 (c) 1.612 (d) 0.1612
37. 37.4.5 × 9 — where does the decimal point go? (a) 0.405 (b) 405 (c) 40.5 (d) 4.05
38. 38.5.7 × 4 — where does the decimal point go? (a) 22.8 (b) 0.228 (c) 228 (d) 2.28
39. 39.0.82 × 1.9 — where does the decimal point go? (a) 0.01558 (b) 15.58 (c) 1.558 (d) 0.1558
40. 40.2.1 × 0.5 — where does the decimal point go? (a) 0.0105 (b) 1.05 (c) 0.105 (d) 10.5

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