Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 823 · 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. 1.3 + 9 + 1 + 9 =
2. 2.410 − 86 =
3. 3.39² =
4. 4.Check with nines: 477 + 171 = 648. Correct or wrong? (a) wrong (b) correct
5. 5.62 × 15 =
6. 6.113 + 17 =
7. 7.56 × 5 =
8. 8.₹60.15 − ₹33.25 =
9. 9.24 + 25 + 66 + 24 =
10. 10.4 + 7 + 9 + 2 + 3 =
11. 11.Best estimate of 59 × 49? (a) 6000 (b) 300 (c) 30000 (d) 3000
12. 12.146 × 4 =
13. 13.₹16.90 − ₹6.10 =
14. 14.Check with nines: 90 × 27 = 2438. Correct or wrong? (a) wrong (b) correct
15. 15.9 + 3 + 4 + 1 =
16. 16.88 + 87 =
17. 17.50 + 22 + 79 + 47 =
18. 18.25% of 350 =
19. 19.14 × 18 =
20. 20.Best estimate of 42 × 91? (a) 360 (b) 36000 (c) 3600 (d) 7200
21. 21.1100 ÷ 50 =
22. 22.₹85.95 + ₹27.10 =
23. 23.14 × 13 =
24. 24.Best estimate of 899 × 7? (a) 63000 (b) 630 (c) 6300 (d) 12600
25. 25.4 + 1 + 8 + 9 =
26. 26.Check with nines: 327 + 199 = 520. Correct or wrong? (a) correct (b) wrong
27. 27.490 ÷ 5 =
28. 28.59² =
29. 29.71² =
30. 30.485 + 17 =
31. 31.531 − 77 =
32. 32.63 + 30 + 65 + 30 =
33. 33.4 + 3 + 6 + 6 =
34. 34.127 + 19 =
35. 35.187 − 98 =
36. 36.355 − 46 =
37. 37.Check with nines: 18 × 27 = 482. Correct or wrong? (a) wrong (b) correct
38. 38.457 − 59 =
39. 39.45 × 8 =
40. 40.31 + 57 + 74 + 51 =

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