Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 657 · 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. 1.466 − 87 =
2. 2.Best estimate of 58 × 71? (a) 420 (b) 42000 (c) 8400 (d) 4200
3. 3.35 + 46 + 18 + 29 =
4. 4.139 × 4 =
5. 5.49 × 15 =
6. 6.307 − 89 =
7. 7.18 × 15 =
8. 8.81² =
9. 9.9 × 15 =
10. 10.563 − 58 =
11. 11.Best estimate of 297 × 7? (a) 2100 (b) 21000 (c) 210 (d) 4200
12. 12.225 ÷ 25 =
13. 13.1650 ÷ 50 =
14. 14.67 + 37 =
15. 15.16 × 15 =
16. 16.Check with nines: 82 × 23 = 1882. Correct or wrong? (a) correct (b) wrong
17. 17.7 + 9 + 2 + 3 + 6 =
18. 18.389 + 27 =
19. 19.660 ÷ 5 =
20. 20.670 ÷ 5 =
21. 21.103 + 58 =
22. 22.4 + 2 + 6 + 2 + 8 =
23. 23.85 + 22 + 47 + 72 =
24. 24.₹90.10 + ₹2.45 =
25. 25.72 × 50 =
26. 26.₹43.20 + ₹12.05 =
27. 27.₹21.65 − ₹7.55 =
28. 28.141 − 98 =
29. 29.52 + 71 + 19 + 34 =
30. 30.314 + 57 =
31. 31.81 + 15 + 50 + 75 =
32. 32.995 ÷ 5 =
33. 33.15 × 16 =
34. 34.Check with nines: 335 + 163 = 498. Correct or wrong? (a) correct (b) wrong
35. 35.91² =
36. 36.44 + 46 + 50 + 79 =
37. 37.5 + 8 + 2 + 8 + 2 =
38. 38.42 + 44 + 84 + 88 =
39. 39.Best estimate of 201 × 7? (a) 14000 (b) 1400 (c) 140 (d) 2800
40. 40.450 + 57 =

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