Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 642 · 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. 1.61² =
2. 2.74 × 8 =
3. 3.26 × 15 =
4. 4.73 + 16 + 52 + 30 =
5. 5.260 − 69 =
6. 6.7 + 3 + 3 + 1 =
7. 7.21 + 53 + 43 + 62 =
8. 8.15% of 100 =
9. 9.8 + 1 + 9 + 9 + 2 =
10. 10.Check with nines: 12 × 51 = 612. Correct or wrong? (a) wrong (b) correct
11. 11.55 + 59 =
12. 12.437 − 99 =
13. 13.51 × 8 =
14. 14.118 × 4 =
15. 15.700 ÷ 25 =
16. 16.8 + 2 + 7 + 3 =
17. 17.16 × 19 =
18. 18.177 + 39 =
19. 19.39 + 77 =
20. 20.42 + 50 + 19 + 15 =
21. 21.Check with nines: 35 × 56 = 1957. Correct or wrong? (a) wrong (b) correct
22. 22.Best estimate of 102 × 6? (a) 60 (b) 6000 (c) 600 (d) 1200
23. 23.₹57.05 + ₹19.95 =
24. 24.1% of 270 =
25. 25.465 + 18 =
26. 26.Best estimate of 68 × 28? (a) 4200 (b) 21000 (c) 2100 (d) 210
27. 27.535 − 78 =
28. 28.491 + 39 =
29. 29.345 − 79 =
30. 30.3 + 6 + 6 + 7 =
31. 31.142 + 39 =
32. 32.15% of 310 =
33. 33.15% of 460 =
34. 34.29 × 15 =
35. 35.34 × 15 =
36. 36.Check with nines: 41 × 49 = 2009. Correct or wrong? (a) correct (b) wrong
37. 37.5% of 850 =
38. 38.17 × 18 =
39. 39.353 − 66 =
40. 40.2 + 1 + 5 + 8 + 5 =

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