Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 404 · 40 questions

The fast method (Spot the trick): A 7, 8 or 9 in the ones place → round and fix. × 4, 8, 5, 50 or 15 → doubling or halving tricks. ÷ 5, 25 or 50 → double first. A percentage → start from 10%. Checking or estimating → nines or rounding.

1. 1.37 × 8 =
2. 2.1325 ÷ 25 =
3. 3.₹56.10 − ₹30.10 =
4. 4.438 − 39 =
5. 5.24 + 26 + 45 + 33 =
6. 6.476 + 39 =
7. 7.Check with nines: 457 + 335 = 787. Correct or wrong? (a) correct (b) wrong
8. 8.10% of 680 =
9. 9.₹65.20 + ₹23.10 =
10. 10.Check with nines: 74 × 28 = 2072. Correct or wrong? (a) wrong (b) correct
11. 11.1000 ÷ 50 =
12. 12.20% of 160 =
13. 13.21² =
14. 14.₹14.95 + ₹29.45 =
15. 15.483 + 97 =
16. 16.69² =
17. 17.131 + 88 =
18. 18.15 × 11 =
19. 19.Check with nines: 711 + 125 = 841. Correct or wrong? (a) wrong (b) correct
20. 20.₹52.70 + ₹6.15 =
21. 21.Check with nines: 49 × 17 = 833. Correct or wrong? (a) wrong (b) correct
22. 22.543 − 18 =
23. 23.Best estimate of 79 × 78? (a) 640 (b) 12800 (c) 64000 (d) 6400
24. 24.78 × 50 =
25. 25.21 × 15 =
26. 26.91² =
27. 27.418 + 98 =
28. 28.Check with nines: 222 + 335 = 549. Correct or wrong? (a) wrong (b) correct
29. 29.2 + 2 + 3 + 1 + 9 =
30. 30.72 + 49 =
31. 31.52 × 15 =
32. 32.Check with nines: 13 × 77 = 1009. Correct or wrong? (a) wrong (b) correct
33. 33.372 + 97 =
34. 34.12 × 15 =
35. 35.24 × 4 =
36. 36.19 × 14 =
37. 37.Best estimate of 68 × 92? (a) 6300 (b) 12600 (c) 630 (d) 63000
38. 38.158 − 96 =
39. 39.26 + 18 + 22 + 43 =
40. 40.5% of 110 =

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