Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 35 · 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. 1.487 + 77 =
2. 2.13 × 17 =
3. 3.301 − 57 =
4. 4.334 − 78 =
5. 5.26 + 28 =
6. 6.30 + 42 + 20 + 77 =
7. 7.111 − 76 =
8. 8.472 − 29 =
9. 9.1000 ÷ 50 =
10. 10.58 × 50 =
11. 11.Check with nines: 332 + 717 = 1049. Correct or wrong? (a) wrong (b) correct
12. 12.18 × 15 =
13. 13.8 + 7 + 4 + 6 =
14. 14.57 × 15 =
15. 15.22 × 15 =
16. 16.49 × 5 =
17. 17.Best estimate of 903 × 9? (a) 16200 (b) 810 (c) 8100 (d) 81000
18. 18.Best estimate of 68 × 48? (a) 7000 (b) 35000 (c) 3500 (d) 350
19. 19.₹77.15 − ₹10.05 =
20. 20.Best estimate of 52 × 29? (a) 150 (b) 15000 (c) 1500 (d) 3000
21. 21.Check with nines: 210 + 793 = 1003. Correct or wrong? (a) correct (b) wrong
22. 22.18 × 19 =
23. 23.65 × 8 =
24. 24.18 × 8 =
25. 25.42 × 4 =
26. 26.547 − 28 =
27. 27.39² =
28. 28.66 × 50 =
29. 29.Best estimate of 52 × 72? (a) 35000 (b) 350 (c) 3500 (d) 7000
30. 30.64 × 15 =
31. 31.25% of 840 =
32. 32.36 × 15 =
33. 33.9 + 4 + 6 + 1 + 5 =
34. 34.4 + 1 + 5 + 2 + 6 =
35. 35.27 + 57 =
36. 36.Best estimate of 29 × 21? (a) 6000 (b) 1200 (c) 600 (d) 60
37. 37.19 × 17 =
38. 38.₹66.10 + ₹8.40 =
39. 39.80 + 55 + 39 + 26 =
40. 40.85 + 22 + 54 + 11 =

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