Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 49 · 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. 1.156 − 98 =
2. 2.10% of 640 =
3. 3.339 + 18 =
4. 4.112 + 27 =
5. 5.Best estimate of 501 × 4? (a) 20000 (b) 4000 (c) 200 (d) 2000
6. 6.201 − 88 =
7. 7.20 + 47 + 20 + 49 =
8. 8.24 × 15 =
9. 9.12 × 15 =
10. 10.1% of 60 =
11. 11.Check with nines: 75 × 62 = 4650. Correct or wrong? (a) correct (b) wrong
12. 12.Best estimate of 402 × 9? (a) 36000 (b) 3600 (c) 360 (d) 7200
13. 13.₹92.90 + ₹11.30 =
14. 14.301 + 97 =
15. 15.66 − 28 =
16. 16.400 ÷ 5 =
17. 17.21 × 15 =
18. 18.28 × 8 =
19. 19.90 + 77 =
20. 20.99 + 27 =
21. 21.97 × 50 =
22. 22.₹12.30 + ₹25.65 =
23. 23.81 × 5 =
24. 24.655 ÷ 5 =
25. 25.Check with nines: 728 + 436 = 1164. Correct or wrong? (a) wrong (b) correct
26. 26.79 × 5 =
27. 27.₹21.85 − ₹17.80 =
28. 28.89 × 5 =
29. 29.9 + 9 + 5 + 1 =
30. 30.Check with nines: 75 × 13 = 975. Correct or wrong? (a) correct (b) wrong
31. 31.61 + 78 + 54 + 27 =
32. 32.16 × 15 =
33. 33.550 ÷ 25 =
34. 34.30 × 8 =
35. 35.19 + 86 + 60 + 30 =
36. 36.34 × 5 =
37. 37.31² =
38. 38.10% of 630 =
39. 39.55 + 44 + 67 + 51 =
40. 40.₹99.95 + ₹14.05 =

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