Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 709 · 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. 1.484 − 69 =
2. 2.15 × 16 =
3. 3.₹47.20 − ₹21.50 =
4. 4.20% of 160 =
5. 5.Best estimate of 702 × 9? (a) 63000 (b) 6300 (c) 12600 (d) 630
6. 6.25% of 410 =
7. 7.382 + 98 =
8. 8.50 × 4 =
9. 9.35 × 4 =
10. 10.₹9.50 + ₹30.80 =
11. 11.20 × 8 =
12. 12.38 × 15 =
13. 13.405 + 27 =
14. 14.6 × 15 =
15. 15.138 − 58 =
16. 16.6 × 15 =
17. 17.Check with nines: 138 + 814 = 952. Correct or wrong? (a) correct (b) wrong
18. 18.286 + 28 =
19. 19.305 + 67 =
20. 20.Best estimate of 18 × 19? (a) 800 (b) 400 (c) 40 (d) 4000
21. 21.₹58.15 + ₹12.90 =
22. 22.490 ÷ 5 =
23. 23.Best estimate of 201 × 3? (a) 600 (b) 6000 (c) 60 (d) 1200
24. 24.Check with nines: 34 × 85 = 2897. Correct or wrong? (a) wrong (b) correct
25. 25.378 + 99 =
26. 26.Check with nines: 31 × 42 = 1308. Correct or wrong? (a) wrong (b) correct
27. 27.Best estimate of 39 × 88? (a) 7200 (b) 36000 (c) 360 (d) 3600
28. 28.1250 ÷ 25 =
29. 29.43 + 17 + 85 + 53 =
30. 30.64 × 50 =
31. 31.143 × 4 =
32. 32.33 + 52 + 29 + 69 =
33. 33.66 × 50 =
34. 34.Check with nines: 43 × 46 = 1978. Correct or wrong? (a) correct (b) wrong
35. 35.87 × 5 =
36. 36.2 + 9 + 1 + 9 + 5 =
37. 37.341 + 87 =
38. 38.91 − 89 =
39. 39.132 × 4 =
40. 40.57 × 5 =

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