Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 655 · 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. 1.6.9 × 2.2 — where does the decimal point go? (a) 0.1518 (b) 151.8 (c) 15.18 (d) 1.518
2. 2.0.16 × 8 — where does the decimal point go? (a) 0.0128 (b) 12.8 (c) 1.28 (d) 0.128
3. 3.0.44 × 0.8 — where does the decimal point go? (a) 3.52 (b) 0.352 (c) 0.0352 (d) 0.00352
4. 4.9.4 × 9 — where does the decimal point go? (a) 0.846 (b) 8.46 (c) 846 (d) 84.6
5. 5.6.9 × 3 — where does the decimal point go? (a) 207 (b) 2.07 (c) 20.7 (d) 0.207
6. 6.3.8 × 9 — where does the decimal point go? (a) 34.2 (b) 0.342 (c) 342 (d) 3.42
7. 7.2.3 × 2.5 — where does the decimal point go? (a) 5.75 (b) 0.575 (c) 57.5 (d) 0.0575
8. 8.7.7 × 3.9 — where does the decimal point go? (a) 300.3 (b) 3.003 (c) 30.03 (d) 0.3003
9. 9.0.74 × 2 — where does the decimal point go? (a) 0.148 (b) 0.0148 (c) 14.8 (d) 1.48
10. 10.7.8 × 0.2 — where does the decimal point go? (a) 1.56 (b) 0.0156 (c) 0.156 (d) 15.6
11. 11.0.12 × 34 — where does the decimal point go? (a) 0.408 (b) 4.08 (c) 0.0408 (d) 40.8
12. 12.0.63 × 4 — where does the decimal point go? (a) 2.52 (b) 25.2 (c) 0.252 (d) 0.0252
13. 13.0.95 × 3 — where does the decimal point go? (a) 0.285 (b) 28.5 (c) 2.85 (d) 0.0285
14. 14.6.3 × 3 — where does the decimal point go? (a) 189 (b) 18.9 (c) 1.89 (d) 0.189
15. 15.2.8 × 2 — where does the decimal point go? (a) 0.56 (b) 0.056 (c) 5.6 (d) 56
16. 16.4.9 × 4 — where does the decimal point go? (a) 0.196 (b) 1.96 (c) 19.6 (d) 196
17. 17.0.48 × 0.4 — where does the decimal point go? (a) 1.92 (b) 0.0192 (c) 0.192 (d) 0.00192
18. 18.0.14 × 26 — where does the decimal point go? (a) 0.0364 (b) 0.364 (c) 36.4 (d) 3.64
19. 19.0.88 × 7 — where does the decimal point go? (a) 0.616 (b) 0.0616 (c) 61.6 (d) 6.16
20. 20.1.4 × 2.9 — where does the decimal point go? (a) 0.0406 (b) 0.406 (c) 4.06 (d) 40.6
21. 21.0.88 × 11 — where does the decimal point go? (a) 96.8 (b) 0.0968 (c) 0.968 (d) 9.68
22. 22.8.3 × 7 — where does the decimal point go? (a) 0.581 (b) 58.1 (c) 5.81 (d) 581
23. 23.9.9 × 12 — where does the decimal point go? (a) 118.8 (b) 1188 (c) 1.188 (d) 11.88
24. 24.9.6 × 2.6 — where does the decimal point go? (a) 2.496 (b) 0.2496 (c) 249.6 (d) 24.96
25. 25.0.55 × 5 — where does the decimal point go? (a) 0.275 (b) 0.0275 (c) 2.75 (d) 27.5
26. 26.7.4 × 3.3 — where does the decimal point go? (a) 24.42 (b) 0.2442 (c) 244.2 (d) 2.442
27. 27.0.99 × 35 — where does the decimal point go? (a) 346.5 (b) 34.65 (c) 3.465 (d) 0.3465
28. 28.5.2 × 38 — where does the decimal point go? (a) 1.976 (b) 197.6 (c) 1976 (d) 19.76
29. 29.1.8 × 0.6 — where does the decimal point go? (a) 0.0108 (b) 10.8 (c) 1.08 (d) 0.108
30. 30.8.7 × 0.9 — where does the decimal point go? (a) 0.783 (b) 7.83 (c) 78.3 (d) 0.0783
31. 31.2.6 × 8 — where does the decimal point go? (a) 2.08 (b) 208 (c) 20.8 (d) 0.208
32. 32.0.45 × 45 — where does the decimal point go? (a) 20.25 (b) 2.025 (c) 0.2025 (d) 202.5
33. 33.5.2 × 0.8 — where does the decimal point go? (a) 0.0416 (b) 0.416 (c) 4.16 (d) 41.6
34. 34.0.71 × 43 — where does the decimal point go? (a) 305.3 (b) 30.53 (c) 3.053 (d) 0.3053
35. 35.2.8 × 9 — where does the decimal point go? (a) 25.2 (b) 0.252 (c) 2.52 (d) 252
36. 36.0.24 × 1.7 — where does the decimal point go? (a) 0.0408 (b) 0.00408 (c) 4.08 (d) 0.408
37. 37.7.3 × 48 — where does the decimal point go? (a) 3504 (b) 350.4 (c) 35.04 (d) 3.504
38. 38.8.2 × 2 — where does the decimal point go? (a) 1.64 (b) 164 (c) 16.4 (d) 0.164
39. 39.0.72 × 18 — where does the decimal point go? (a) 1.296 (b) 0.1296 (c) 12.96 (d) 129.6
40. 40.3.3 × 8 — where does the decimal point go? (a) 0.264 (b) 2.64 (c) 26.4 (d) 264

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