Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 29 · 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. 1.0.98 × 2.9 — where does the decimal point go? (a) 2.842 (b) 28.42 (c) 0.02842 (d) 0.2842
2. 2.4.5 × 4.7 — where does the decimal point go? (a) 2.115 (b) 21.15 (c) 211.5 (d) 0.2115
3. 3.2.8 × 9 — where does the decimal point go? (a) 0.252 (b) 252 (c) 2.52 (d) 25.2
4. 4.0.12 × 3.4 — where does the decimal point go? (a) 0.0408 (b) 0.408 (c) 0.00408 (d) 4.08
5. 5.4.6 × 6 — where does the decimal point go? (a) 0.276 (b) 276 (c) 2.76 (d) 27.6
6. 6.2.2 × 0.6 — where does the decimal point go? (a) 13.2 (b) 1.32 (c) 0.0132 (d) 0.132
7. 7.0.24 × 6 — where does the decimal point go? (a) 1.44 (b) 0.144 (c) 0.0144 (d) 14.4
8. 8.4.3 × 5 — where does the decimal point go? (a) 2.15 (b) 215 (c) 0.215 (d) 21.5
9. 9.8.2 × 0.3 — where does the decimal point go? (a) 24.6 (b) 0.0246 (c) 2.46 (d) 0.246
10. 10.0.71 × 4 — where does the decimal point go? (a) 0.284 (b) 28.4 (c) 2.84 (d) 0.0284
11. 11.0.79 × 13 — where does the decimal point go? (a) 10.27 (b) 1.027 (c) 102.7 (d) 0.1027
12. 12.0.94 × 0.6 — where does the decimal point go? (a) 0.564 (b) 0.0564 (c) 0.00564 (d) 5.64
13. 13.0.98 × 7 — where does the decimal point go? (a) 0.686 (b) 68.6 (c) 0.0686 (d) 6.86
14. 14.2.9 × 1.5 — where does the decimal point go? (a) 0.435 (b) 43.5 (c) 0.0435 (d) 4.35
15. 15.0.82 × 7 — where does the decimal point go? (a) 57.4 (b) 0.574 (c) 0.0574 (d) 5.74
16. 16.0.28 × 31 — where does the decimal point go? (a) 0.0868 (b) 0.868 (c) 8.68 (d) 86.8
17. 17.0.57 × 18 — where does the decimal point go? (a) 0.1026 (b) 10.26 (c) 102.6 (d) 1.026
18. 18.0.27 × 33 — where does the decimal point go? (a) 0.891 (b) 8.91 (c) 0.0891 (d) 89.1
19. 19.1.9 × 0.4 — where does the decimal point go? (a) 0.76 (b) 0.0076 (c) 7.6 (d) 0.076
20. 20.4.4 × 8 — where does the decimal point go? (a) 352 (b) 35.2 (c) 3.52 (d) 0.352
21. 21.0.82 × 0.2 — where does the decimal point go? (a) 0.164 (b) 1.64 (c) 0.0164 (d) 0.00164
22. 22.4.8 × 2 — where does the decimal point go? (a) 0.096 (b) 96 (c) 9.6 (d) 0.96
23. 23.9.2 × 29 — where does the decimal point go? (a) 2668 (b) 266.8 (c) 26.68 (d) 2.668
24. 24.4.1 × 0.8 — where does the decimal point go? (a) 32.8 (b) 0.328 (c) 3.28 (d) 0.0328
25. 25.0.46 × 0.2 — where does the decimal point go? (a) 0.00092 (b) 0.92 (c) 0.0092 (d) 0.092
26. 26.5.7 × 2 — where does the decimal point go? (a) 0.114 (b) 11.4 (c) 1.14 (d) 114
27. 27.0.12 × 9 — where does the decimal point go? (a) 10.8 (b) 0.0108 (c) 0.108 (d) 1.08
28. 28.0.21 × 2.7 — where does the decimal point go? (a) 0.567 (b) 0.0567 (c) 5.67 (d) 0.00567
29. 29.5.2 × 4.1 — where does the decimal point go? (a) 213.2 (b) 2.132 (c) 0.2132 (d) 21.32
30. 30.0.65 × 0.3 — where does the decimal point go? (a) 1.95 (b) 0.00195 (c) 0.0195 (d) 0.195
31. 31.9.9 × 33 — where does the decimal point go? (a) 3.267 (b) 32.67 (c) 326.7 (d) 3267
32. 32.8.9 × 9 — where does the decimal point go? (a) 8.01 (b) 80.1 (c) 801 (d) 0.801
33. 33.3.7 × 0.6 — where does the decimal point go? (a) 0.0222 (b) 22.2 (c) 0.222 (d) 2.22
34. 34.2.8 × 2 — where does the decimal point go? (a) 0.056 (b) 5.6 (c) 0.56 (d) 56
35. 35.0.71 × 3 — where does the decimal point go? (a) 0.0213 (b) 2.13 (c) 0.213 (d) 21.3
36. 36.0.61 × 3 — where does the decimal point go? (a) 0.0183 (b) 18.3 (c) 0.183 (d) 1.83
37. 37.0.34 × 3.1 — where does the decimal point go? (a) 1.054 (b) 0.01054 (c) 0.1054 (d) 10.54
38. 38.2.2 × 3 — where does the decimal point go? (a) 0.66 (b) 66 (c) 0.066 (d) 6.6
39. 39.0.23 × 6 — where does the decimal point go? (a) 0.0138 (b) 1.38 (c) 0.138 (d) 13.8
40. 40.0.34 × 0.3 — where does the decimal point go? (a) 0.0102 (b) 1.02 (c) 0.102 (d) 0.00102

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