Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 295 · 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. 1.0.72 × 0.3 — where does the decimal point go? (a) 0.0216 (b) 0.00216 (c) 0.216 (d) 2.16
2. 2.6.2 × 2.9 — where does the decimal point go? (a) 1.798 (b) 0.1798 (c) 179.8 (d) 17.98
3. 3.0.27 × 0.7 — where does the decimal point go? (a) 0.00189 (b) 0.189 (c) 0.0189 (d) 1.89
4. 4.2.6 × 0.6 — where does the decimal point go? (a) 0.0156 (b) 0.156 (c) 15.6 (d) 1.56
5. 5.6.9 × 22 — where does the decimal point go? (a) 1.518 (b) 151.8 (c) 1518 (d) 15.18
6. 6.0.37 × 0.2 — where does the decimal point go? (a) 0.0074 (b) 0.074 (c) 0.74 (d) 0.00074
7. 7.3.6 × 8 — where does the decimal point go? (a) 2.88 (b) 28.8 (c) 288 (d) 0.288
8. 8.0.94 × 32 — where does the decimal point go? (a) 3.008 (b) 0.3008 (c) 30.08 (d) 300.8
9. 9.7.2 × 4 — where does the decimal point go? (a) 0.288 (b) 2.88 (c) 288 (d) 28.8
10. 10.1.9 × 17 — where does the decimal point go? (a) 3.23 (b) 32.3 (c) 0.323 (d) 323
11. 11.6.1 × 8 — where does the decimal point go? (a) 0.488 (b) 4.88 (c) 488 (d) 48.8
12. 12.0.45 × 7 — where does the decimal point go? (a) 31.5 (b) 0.0315 (c) 3.15 (d) 0.315
13. 13.0.52 × 4 — where does the decimal point go? (a) 2.08 (b) 0.208 (c) 0.0208 (d) 20.8
14. 14.4.8 × 23 — where does the decimal point go? (a) 110.4 (b) 1104 (c) 1.104 (d) 11.04
15. 15.3.8 × 4 — where does the decimal point go? (a) 152 (b) 0.152 (c) 1.52 (d) 15.2
16. 16.6.4 × 0.2 — where does the decimal point go? (a) 12.8 (b) 0.0128 (c) 0.128 (d) 1.28
17. 17.0.84 × 1.8 — where does the decimal point go? (a) 15.12 (b) 1.512 (c) 0.01512 (d) 0.1512
18. 18.0.31 × 3.6 — where does the decimal point go? (a) 11.16 (b) 1.116 (c) 0.01116 (d) 0.1116
19. 19.5.2 × 3.8 — where does the decimal point go? (a) 1.976 (b) 19.76 (c) 0.1976 (d) 197.6
20. 20.0.65 × 4.5 — where does the decimal point go? (a) 0.2925 (b) 29.25 (c) 2.925 (d) 0.02925
21. 21.0.92 × 4.7 — where does the decimal point go? (a) 43.24 (b) 0.4324 (c) 4.324 (d) 0.04324
22. 22.3.6 × 4 — where does the decimal point go? (a) 0.144 (b) 1.44 (c) 14.4 (d) 144
23. 23.5.1 × 0.8 — where does the decimal point go? (a) 4.08 (b) 0.408 (c) 0.0408 (d) 40.8
24. 24.0.97 × 21 — where does the decimal point go? (a) 2.037 (b) 0.2037 (c) 203.7 (d) 20.37
25. 25.8.3 × 24 — where does the decimal point go? (a) 199.2 (b) 1.992 (c) 19.92 (d) 1992
26. 26.0.89 × 11 — where does the decimal point go? (a) 0.979 (b) 0.0979 (c) 9.79 (d) 97.9
27. 27.8.6 × 0.9 — where does the decimal point go? (a) 0.0774 (b) 0.774 (c) 77.4 (d) 7.74
28. 28.0.15 × 45 — where does the decimal point go? (a) 67.5 (b) 6.75 (c) 0.675 (d) 0.0675
29. 29.2.2 × 24 — where does the decimal point go? (a) 52.8 (b) 5.28 (c) 0.528 (d) 528
30. 30.4.1 × 18 — where does the decimal point go? (a) 738 (b) 73.8 (c) 7.38 (d) 0.738
31. 31.3.6 × 2.2 — where does the decimal point go? (a) 0.792 (b) 0.0792 (c) 7.92 (d) 79.2
32. 32.0.75 × 7 — where does the decimal point go? (a) 0.525 (b) 5.25 (c) 0.0525 (d) 52.5
33. 33.0.61 × 0.8 — where does the decimal point go? (a) 0.0488 (b) 4.88 (c) 0.488 (d) 0.00488
34. 34.0.58 × 14 — where does the decimal point go? (a) 8.12 (b) 0.812 (c) 0.0812 (d) 81.2
35. 35.0.46 × 8 — where does the decimal point go? (a) 0.0368 (b) 3.68 (c) 36.8 (d) 0.368
36. 36.0.59 × 1.3 — where does the decimal point go? (a) 7.67 (b) 0.0767 (c) 0.00767 (d) 0.767
37. 37.0.79 × 0.6 — where does the decimal point go? (a) 4.74 (b) 0.0474 (c) 0.00474 (d) 0.474
38. 38.0.99 × 9 — where does the decimal point go? (a) 0.0891 (b) 89.1 (c) 8.91 (d) 0.891
39. 39.0.87 × 49 — where does the decimal point go? (a) 426.3 (b) 42.63 (c) 0.4263 (d) 4.263
40. 40.0.98 × 3 — where does the decimal point go? (a) 0.0294 (b) 0.294 (c) 29.4 (d) 2.94

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