Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 836 · 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. 1.8.9 × 1.4 — where does the decimal point go? (a) 1.246 (b) 12.46 (c) 124.6 (d) 0.1246
2. 2.0.97 × 32 — where does the decimal point go? (a) 3.104 (b) 0.3104 (c) 31.04 (d) 310.4
3. 3.2.1 × 1.8 — where does the decimal point go? (a) 0.0378 (b) 3.78 (c) 37.8 (d) 0.378
4. 4.0.84 × 4 — where does the decimal point go? (a) 3.36 (b) 33.6 (c) 0.336 (d) 0.0336
5. 5.8.9 × 7 — where does the decimal point go? (a) 6.23 (b) 623 (c) 62.3 (d) 0.623
6. 6.0.22 × 0.9 — where does the decimal point go? (a) 0.0198 (b) 1.98 (c) 0.198 (d) 0.00198
7. 7.8.9 × 33 — where does the decimal point go? (a) 2.937 (b) 29.37 (c) 293.7 (d) 2937
8. 8.9.5 × 19 — where does the decimal point go? (a) 180.5 (b) 18.05 (c) 1.805 (d) 1805
9. 9.5.2 × 6 — where does the decimal point go? (a) 0.312 (b) 31.2 (c) 3.12 (d) 312
10. 10.5.1 × 36 — where does the decimal point go? (a) 183.6 (b) 18.36 (c) 1836 (d) 1.836
11. 11.6.6 × 0.3 — where does the decimal point go? (a) 0.198 (b) 0.0198 (c) 19.8 (d) 1.98
12. 12.0.67 × 4.1 — where does the decimal point go? (a) 0.02747 (b) 27.47 (c) 2.747 (d) 0.2747
13. 13.7.3 × 44 — where does the decimal point go? (a) 3212 (b) 32.12 (c) 3.212 (d) 321.2
14. 14.4.9 × 0.9 — where does the decimal point go? (a) 4.41 (b) 44.1 (c) 0.441 (d) 0.0441
15. 15.1.4 × 9 — where does the decimal point go? (a) 0.126 (b) 1.26 (c) 12.6 (d) 126
16. 16.6.7 × 3 — where does the decimal point go? (a) 20.1 (b) 2.01 (c) 201 (d) 0.201
17. 17.0.46 × 6 — where does the decimal point go? (a) 0.0276 (b) 2.76 (c) 27.6 (d) 0.276
18. 18.4.2 × 3.2 — where does the decimal point go? (a) 134.4 (b) 1.344 (c) 13.44 (d) 0.1344
19. 19.9.5 × 35 — where does the decimal point go? (a) 3325 (b) 332.5 (c) 33.25 (d) 3.325
20. 20.4.2 × 28 — where does the decimal point go? (a) 117.6 (b) 11.76 (c) 1176 (d) 1.176
21. 21.6.2 × 1.1 — where does the decimal point go? (a) 6.82 (b) 0.682 (c) 0.0682 (d) 68.2
22. 22.1.8 × 0.6 — where does the decimal point go? (a) 0.0108 (b) 0.108 (c) 1.08 (d) 10.8
23. 23.0.54 × 2 — where does the decimal point go? (a) 1.08 (b) 0.0108 (c) 0.108 (d) 10.8
24. 24.5.2 × 2 — where does the decimal point go? (a) 104 (b) 0.104 (c) 10.4 (d) 1.04
25. 25.1.7 × 5 — where does the decimal point go? (a) 0.085 (b) 85 (c) 8.5 (d) 0.85
26. 26.5.9 × 48 — where does the decimal point go? (a) 28.32 (b) 2.832 (c) 2832 (d) 283.2
27. 27.0.82 × 6 — where does the decimal point go? (a) 4.92 (b) 0.0492 (c) 0.492 (d) 49.2
28. 28.0.56 × 14 — where does the decimal point go? (a) 7.84 (b) 78.4 (c) 0.0784 (d) 0.784
29. 29.9.6 × 1.8 — where does the decimal point go? (a) 1.728 (b) 172.8 (c) 17.28 (d) 0.1728
30. 30.0.72 × 34 — where does the decimal point go? (a) 0.2448 (b) 24.48 (c) 244.8 (d) 2.448
31. 31.3.1 × 7 — where does the decimal point go? (a) 0.217 (b) 21.7 (c) 2.17 (d) 217
32. 32.0.57 × 0.9 — where does the decimal point go? (a) 0.0513 (b) 0.513 (c) 5.13 (d) 0.00513
33. 33.2.9 × 4.3 — where does the decimal point go? (a) 124.7 (b) 12.47 (c) 0.1247 (d) 1.247
34. 34.0.17 × 37 — where does the decimal point go? (a) 0.629 (b) 6.29 (c) 62.9 (d) 0.0629
35. 35.0.54 × 3 — where does the decimal point go? (a) 16.2 (b) 1.62 (c) 0.162 (d) 0.0162
36. 36.0.49 × 0.9 — where does the decimal point go? (a) 0.441 (b) 4.41 (c) 0.00441 (d) 0.0441
37. 37.7.6 × 3.1 — where does the decimal point go? (a) 235.6 (b) 2.356 (c) 0.2356 (d) 23.56
38. 38.1.2 × 24 — where does the decimal point go? (a) 28.8 (b) 2.88 (c) 288 (d) 0.288
39. 39.0.17 × 4 — where does the decimal point go? (a) 0.0068 (b) 6.8 (c) 0.68 (d) 0.068
40. 40.7.2 × 3.8 — where does the decimal point go? (a) 0.2736 (b) 2.736 (c) 27.36 (d) 273.6

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