Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 242 · 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. 1.1050 ÷ 50 =
2. 2.21 × 8 =
3. 3.32 × 4 =
4. 4.210 + 87 =
5. 5.2 + 5 + 8 + 6 =
6. 6.208 + 78 =
7. 7.Best estimate of 31 × 69? (a) 21000 (b) 2100 (c) 210 (d) 4200
8. 8.92 + 97 =
9. 9.16 + 72 + 38 + 67 =
10. 10.43 × 15 =
11. 11.54 × 50 =
12. 12.Best estimate of 89 × 52? (a) 45000 (b) 450 (c) 4500 (d) 9000
13. 13.10% of 240 =
14. 14.₹95.90 − ₹4.25 =
15. 15.₹29.05 + ₹18.75 =
16. 16.₹73.80 + ₹13.35 =
17. 17.₹92.10 − ₹32.80 =
18. 18.₹76.40 + ₹8.60 =
19. 19.₹58.20 + ₹38.75 =
20. 20.360 ÷ 5 =
21. 21.14 × 12 =
22. 22.Check with nines: 425 + 930 = 1352. Correct or wrong? (a) correct (b) wrong
23. 23.3 + 4 + 5 + 9 + 6 =
24. 24.441 + 89 =
25. 25.86 + 20 + 84 + 19 =
26. 26.17 × 15 =
27. 27.68 + 25 + 71 + 22 =
28. 28.55 × 5 =
29. 29.45 + 13 + 74 + 14 =
30. 30.33 × 50 =
31. 31.443 − 46 =
32. 32.150 ÷ 25 =
33. 33.Check with nines: 242 + 622 = 864. Correct or wrong? (a) wrong (b) correct
34. 34.Best estimate of 701 × 8? (a) 56000 (b) 560 (c) 11200 (d) 5600
35. 35.1300 ÷ 50 =
36. 36.Best estimate of 598 × 5? (a) 6000 (b) 3000 (c) 300 (d) 30000
37. 37.16 × 14 =
38. 38.30 × 15 =
39. 39.1 + 1 + 7 + 9 =
40. 40.₹36.65 + ₹20.40 =

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