Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 522 · 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.₹33.90 − ₹28.65 =
2. 2.157 − 36 =
3. 3.376 + 37 =
4. 4.37 × 5 =
5. 5.147 × 4 =
6. 6.Check with nines: 54 × 85 = 4590. Correct or wrong? (a) correct (b) wrong
7. 7.130 × 4 =
8. 8.1% of 180 =
9. 9.19 × 18 =
10. 10.493 − 89 =
11. 11.10% of 320 =
12. 12.92 − 19 =
13. 13.17 + 45 + 14 + 66 =
14. 14.8 + 3 + 7 + 7 =
15. 15.4 + 6 + 1 + 6 + 8 =
16. 16.Check with nines: 80 × 54 = 4320. Correct or wrong? (a) wrong (b) correct
17. 17.Check with nines: 75 × 99 = 7417. Correct or wrong? (a) correct (b) wrong
18. 18.196 + 88 =
19. 19.79² =
20. 20.Best estimate of 21 × 81? (a) 16000 (b) 160 (c) 1600 (d) 3200
21. 21.300 ÷ 5 =
22. 22.10 × 15 =
23. 23.3 + 7 + 2 + 8 =
24. 24.1% of 800 =
25. 25.6 + 9 + 8 + 9 + 4 =
26. 26.20% of 670 =
27. 27.4 × 15 =
28. 28.5% of 170 =
29. 29.28 × 4 =
30. 30.12 × 13 =
31. 31.₹12.15 − ₹7.10 =
32. 32.10% of 400 =
33. 33.98 × 50 =
34. 34.183 + 88 =
35. 35.₹51.15 + ₹39.90 =
36. 36.296 − 38 =
37. 37.22 × 8 =
38. 38.Check with nines: 966 + 315 = 1281. Correct or wrong? (a) wrong (b) correct
39. 39.610 ÷ 5 =
40. 40.199 + 67 =

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