Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 894 · 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. 1.2.8 × 1.8 — where does the decimal point go? (a) 5.04 (b) 0.504 (c) 0.0504 (d) 50.4
2. 2.5.8 × 2.3 — where does the decimal point go? (a) 0.1334 (b) 133.4 (c) 1.334 (d) 13.34
3. 3.4.8 × 4.1 — where does the decimal point go? (a) 19.68 (b) 196.8 (c) 0.1968 (d) 1.968
4. 4.7.8 × 0.8 — where does the decimal point go? (a) 0.624 (b) 62.4 (c) 6.24 (d) 0.0624
5. 5.0.23 × 0.2 — where does the decimal point go? (a) 0.46 (b) 0.00046 (c) 0.0046 (d) 0.046
6. 6.0.84 × 0.9 — where does the decimal point go? (a) 0.00756 (b) 7.56 (c) 0.756 (d) 0.0756
7. 7.9.7 × 4.8 — where does the decimal point go? (a) 0.4656 (b) 465.6 (c) 4.656 (d) 46.56
8. 8.7.3 × 8 — where does the decimal point go? (a) 0.584 (b) 5.84 (c) 584 (d) 58.4
9. 9.5.9 × 4 — where does the decimal point go? (a) 23.6 (b) 2.36 (c) 236 (d) 0.236
10. 10.0.84 × 2 — where does the decimal point go? (a) 0.168 (b) 16.8 (c) 1.68 (d) 0.0168
11. 11.0.68 × 3.2 — where does the decimal point go? (a) 0.2176 (b) 21.76 (c) 0.02176 (d) 2.176
12. 12.0.55 × 29 — where does the decimal point go? (a) 159.5 (b) 1.595 (c) 15.95 (d) 0.1595
13. 13.3.8 × 0.2 — where does the decimal point go? (a) 0.076 (b) 0.76 (c) 0.0076 (d) 7.6
14. 14.8.2 × 0.2 — where does the decimal point go? (a) 16.4 (b) 0.0164 (c) 0.164 (d) 1.64
15. 15.5.4 × 16 — where does the decimal point go? (a) 0.864 (b) 86.4 (c) 8.64 (d) 864
16. 16.4.6 × 6 — where does the decimal point go? (a) 0.276 (b) 27.6 (c) 2.76 (d) 276
17. 17.0.84 × 4.7 — where does the decimal point go? (a) 0.3948 (b) 39.48 (c) 3.948 (d) 0.03948
18. 18.0.15 × 2.5 — where does the decimal point go? (a) 0.375 (b) 3.75 (c) 0.00375 (d) 0.0375
19. 19.3.3 × 4.9 — where does the decimal point go? (a) 0.1617 (b) 1.617 (c) 161.7 (d) 16.17
20. 20.5.1 × 1.9 — where does the decimal point go? (a) 0.0969 (b) 9.69 (c) 96.9 (d) 0.969
21. 21.1.7 × 0.3 — where does the decimal point go? (a) 5.1 (b) 0.51 (c) 0.0051 (d) 0.051
22. 22.0.23 × 0.8 — where does the decimal point go? (a) 0.184 (b) 0.0184 (c) 1.84 (d) 0.00184
23. 23.0.29 × 0.5 — where does the decimal point go? (a) 1.45 (b) 0.00145 (c) 0.145 (d) 0.0145
24. 24.9.6 × 3 — where does the decimal point go? (a) 288 (b) 0.288 (c) 2.88 (d) 28.8
25. 25.0.93 × 1.4 — where does the decimal point go? (a) 0.01302 (b) 13.02 (c) 1.302 (d) 0.1302
26. 26.0.34 × 0.6 — where does the decimal point go? (a) 0.00204 (b) 2.04 (c) 0.0204 (d) 0.204
27. 27.7.9 × 2 — where does the decimal point go? (a) 0.158 (b) 15.8 (c) 158 (d) 1.58
28. 28.9.1 × 18 — where does the decimal point go? (a) 1638 (b) 16.38 (c) 163.8 (d) 1.638
29. 29.6.4 × 4.3 — where does the decimal point go? (a) 27.52 (b) 275.2 (c) 0.2752 (d) 2.752
30. 30.0.35 × 5 — where does the decimal point go? (a) 1.75 (b) 0.0175 (c) 0.175 (d) 17.5
31. 31.1.7 × 4.4 — where does the decimal point go? (a) 0.0748 (b) 7.48 (c) 0.748 (d) 74.8
32. 32.6.9 × 3.1 — where does the decimal point go? (a) 213.9 (b) 21.39 (c) 2.139 (d) 0.2139
33. 33.6.4 × 0.2 — where does the decimal point go? (a) 0.0128 (b) 0.128 (c) 12.8 (d) 1.28
34. 34.0.16 × 3 — where does the decimal point go? (a) 0.48 (b) 0.0048 (c) 0.048 (d) 4.8
35. 35.0.44 × 0.4 — where does the decimal point go? (a) 0.176 (b) 0.0176 (c) 0.00176 (d) 1.76
36. 36.3.2 × 2 — where does the decimal point go? (a) 6.4 (b) 0.64 (c) 64 (d) 0.064
37. 37.4.3 × 0.7 — where does the decimal point go? (a) 3.01 (b) 0.301 (c) 0.0301 (d) 30.1
38. 38.3.5 × 9 — where does the decimal point go? (a) 31.5 (b) 3.15 (c) 315 (d) 0.315
39. 39.8.3 × 4 — where does the decimal point go? (a) 332 (b) 33.2 (c) 3.32 (d) 0.332
40. 40.0.24 × 1.8 — where does the decimal point go? (a) 4.32 (b) 0.00432 (c) 0.432 (d) 0.0432

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