Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 830 · 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.₹24.35 − ₹7.40 =
2. 2.Check with nines: 280 + 875 = 1155. Correct or wrong? (a) correct (b) wrong
3. 3.15% of 50 =
4. 4.73 + 40 + 53 + 42 =
5. 5.Check with nines: 916 + 401 = 1311. Correct or wrong? (a) wrong (b) correct
6. 6.485 − 26 =
7. 7.₹32.90 − ₹21.95 =
8. 8.₹34.65 − ₹32.60 =
9. 9.30 × 15 =
10. 10.28 + 67 =
11. 11.93 − 19 =
12. 12.233 + 17 =
13. 13.Check with nines: 706 + 667 = 1381. Correct or wrong? (a) correct (b) wrong
14. 14.48 × 15 =
15. 15.6 + 4 + 2 + 3 + 6 =
16. 16.27 + 79 =
17. 17.Best estimate of 18 × 68? (a) 2800 (b) 140 (c) 14000 (d) 1400
18. 18.64 × 50 =
19. 19.65 × 4 =
20. 20.Check with nines: 763 + 131 = 894. Correct or wrong? (a) correct (b) wrong
21. 21.52 × 8 =
22. 22.Best estimate of 48 × 31? (a) 150 (b) 15000 (c) 3000 (d) 1500
23. 23.55 + 88 + 80 + 79 =
24. 24.85 × 5 =
25. 25.26 × 8 =
26. 26.4 + 2 + 3 + 7 + 8 =
27. 27.85 × 5 =
28. 28.50 + 69 + 33 + 40 =
29. 29.18 × 11 =
30. 30.182 + 67 =
31. 31.55 + 24 + 34 + 77 =
32. 32.86 + 60 + 87 + 72 =
33. 33.Check with nines: 49 × 99 = 4856. Correct or wrong? (a) wrong (b) correct
34. 34.181 − 76 =
35. 35.31 × 4 =
36. 36.8 + 8 + 4 + 9 + 6 =
37. 37.32 × 15 =
38. 38.10% of 460 =
39. 39.Check with nines: 986 + 418 = 1404. Correct or wrong? (a) wrong (b) correct
40. 40.6 + 3 + 3 + 7 + 7 =

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