Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 122 · 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 × 4.6 — where does the decimal point go? (a) 0.3174 (b) 31.74 (c) 317.4 (d) 3.174
2. 2.0.56 × 2 — where does the decimal point go? (a) 11.2 (b) 0.112 (c) 0.0112 (d) 1.12
3. 3.0.97 × 17 — where does the decimal point go? (a) 0.1649 (b) 164.9 (c) 1.649 (d) 16.49
4. 4.0.31 × 0.4 — where does the decimal point go? (a) 0.124 (b) 0.00124 (c) 0.0124 (d) 1.24
5. 5.5.4 × 2.2 — where does the decimal point go? (a) 0.1188 (b) 118.8 (c) 1.188 (d) 11.88
6. 6.4.3 × 9 — where does the decimal point go? (a) 3.87 (b) 38.7 (c) 387 (d) 0.387
7. 7.3.2 × 16 — where does the decimal point go? (a) 512 (b) 0.512 (c) 5.12 (d) 51.2
8. 8.0.84 × 26 — where does the decimal point go? (a) 2.184 (b) 0.2184 (c) 218.4 (d) 21.84
9. 9.0.26 × 0.9 — where does the decimal point go? (a) 0.234 (b) 2.34 (c) 0.00234 (d) 0.0234
10. 10.0.73 × 16 — where does the decimal point go? (a) 0.1168 (b) 11.68 (c) 1.168 (d) 116.8
11. 11.4.9 × 0.5 — where does the decimal point go? (a) 2.45 (b) 0.245 (c) 0.0245 (d) 24.5
12. 12.2.6 × 22 — where does the decimal point go? (a) 0.572 (b) 572 (c) 57.2 (d) 5.72
13. 13.3.7 × 2 — where does the decimal point go? (a) 7.4 (b) 74 (c) 0.74 (d) 0.074
14. 14.0.73 × 0.8 — where does the decimal point go? (a) 0.0584 (b) 0.584 (c) 0.00584 (d) 5.84
15. 15.8.2 × 2.7 — where does the decimal point go? (a) 22.14 (b) 0.2214 (c) 2.214 (d) 221.4
16. 16.2.5 × 0.5 — where does the decimal point go? (a) 0.0125 (b) 1.25 (c) 0.125 (d) 12.5
17. 17.3.1 × 2.1 — where does the decimal point go? (a) 65.1 (b) 0.0651 (c) 0.651 (d) 6.51
18. 18.0.37 × 5 — where does the decimal point go? (a) 0.185 (b) 18.5 (c) 0.0185 (d) 1.85
19. 19.0.27 × 26 — where does the decimal point go? (a) 7.02 (b) 0.0702 (c) 70.2 (d) 0.702
20. 20.2.9 × 47 — where does the decimal point go? (a) 136.3 (b) 1363 (c) 1.363 (d) 13.63
21. 21.4.1 × 4.4 — where does the decimal point go? (a) 0.1804 (b) 1.804 (c) 180.4 (d) 18.04
22. 22.0.33 × 32 — where does the decimal point go? (a) 105.6 (b) 1.056 (c) 10.56 (d) 0.1056
23. 23.0.14 × 9 — where does the decimal point go? (a) 0.126 (b) 12.6 (c) 1.26 (d) 0.0126
24. 24.5.4 × 9 — where does the decimal point go? (a) 0.486 (b) 486 (c) 48.6 (d) 4.86
25. 25.2.8 × 3.2 — where does the decimal point go? (a) 8.96 (b) 0.0896 (c) 89.6 (d) 0.896
26. 26.5.7 × 7 — where does the decimal point go? (a) 3.99 (b) 0.399 (c) 399 (d) 39.9
27. 27.3.3 × 8 — where does the decimal point go? (a) 0.264 (b) 2.64 (c) 264 (d) 26.4
28. 28.0.32 × 48 — where does the decimal point go? (a) 1.536 (b) 0.1536 (c) 153.6 (d) 15.36
29. 29.0.44 × 2 — where does the decimal point go? (a) 0.088 (b) 0.88 (c) 0.0088 (d) 8.8
30. 30.7.3 × 0.5 — where does the decimal point go? (a) 0.365 (b) 3.65 (c) 0.0365 (d) 36.5
31. 31.0.17 × 0.4 — where does the decimal point go? (a) 0.068 (b) 0.00068 (c) 0.0068 (d) 0.68
32. 32.9.2 × 0.9 — where does the decimal point go? (a) 0.0828 (b) 0.828 (c) 82.8 (d) 8.28
33. 33.0.12 × 3 — where does the decimal point go? (a) 0.036 (b) 0.0036 (c) 3.6 (d) 0.36
34. 34.5.4 × 23 — where does the decimal point go? (a) 124.2 (b) 12.42 (c) 1.242 (d) 1242
35. 35.3.1 × 33 — where does the decimal point go? (a) 1.023 (b) 1023 (c) 102.3 (d) 10.23
36. 36.0.13 × 2.2 — where does the decimal point go? (a) 0.0286 (b) 0.00286 (c) 2.86 (d) 0.286
37. 37.0.96 × 0.4 — where does the decimal point go? (a) 0.0384 (b) 0.384 (c) 3.84 (d) 0.00384
38. 38.1.3 × 1.3 — where does the decimal point go? (a) 1.69 (b) 0.169 (c) 0.0169 (d) 16.9
39. 39.9.1 × 6 — where does the decimal point go? (a) 5.46 (b) 54.6 (c) 546 (d) 0.546
40. 40.0.92 × 13 — where does the decimal point go? (a) 0.1196 (b) 11.96 (c) 119.6 (d) 1.196

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