Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 319 · 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.₹75.20 − ₹15.15 =
2. 2.18 × 8 =
3. 3.₹8.50 + ₹12.85 =
4. 4.130 × 4 =
5. 5.244 − 18 =
6. 6.321 + 98 =
7. 7.421 + 99 =
8. 8.Check with nines: 20 × 15 = 308. Correct or wrong? (a) wrong (b) correct
9. 9.36 × 50 =
10. 10.1450 ÷ 25 =
11. 11.10% of 880 =
12. 12.475 + 29 =
13. 13.2 + 8 + 8 + 8 + 8 =
14. 14.451 + 88 =
15. 15.Best estimate of 597 × 3? (a) 3600 (b) 18000 (c) 180 (d) 1800
16. 16.19 × 16 =
17. 17.Check with nines: 289 + 236 = 531. Correct or wrong? (a) wrong (b) correct
18. 18.231 + 27 =
19. 19.19 + 71 + 48 + 63 =
20. 20.5 + 8 + 4 + 5 =
21. 21.47 × 8 =
22. 22.71² =
23. 23.1% of 80 =
24. 24.13 × 50 =
25. 25.₹75.05 − ₹30.50 =
26. 26.19² =
27. 27.Best estimate of 68 × 21? (a) 140 (b) 2800 (c) 14000 (d) 1400
28. 28.14 × 17 =
29. 29.Check with nines: 12 × 56 = 672. Correct or wrong? (a) wrong (b) correct
30. 30.Best estimate of 21 × 71? (a) 14000 (b) 140 (c) 1400 (d) 2800
31. 31.1% of 850 =
32. 32.₹31.95 + ₹6.05 =
33. 33.50% of 210 =
34. 34.21² =
35. 35.25 × 8 =
36. 36.61 × 15 =
37. 37.Best estimate of 89 × 59? (a) 540 (b) 10800 (c) 5400 (d) 54000
38. 38.37 + 68 =
39. 39.Best estimate of 49 × 28? (a) 150 (b) 15000 (c) 1500 (d) 3000
40. 40.32 + 45 + 67 + 17 =

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