Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 53 · 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. 1.405 − 26 =
2. 2.353 + 89 =
3. 3.44 + 44 + 64 + 83 =
4. 4.15 × 16 =
5. 5.56 + 67 =
6. 6.650 ÷ 50 =
7. 7.186 − 17 =
8. 8.5% of 120 =
9. 9.448 − 86 =
10. 10.26 × 5 =
11. 11.Best estimate of 297 × 9? (a) 5400 (b) 270 (c) 2700 (d) 27000
12. 12.50% of 150 =
13. 13.Best estimate of 703 × 8? (a) 56000 (b) 11200 (c) 560 (d) 5600
14. 14.30 + 25 + 54 + 82 =
15. 15.36 × 50 =
16. 16.15% of 650 =
17. 17.3 + 7 + 6 + 9 + 2 =
18. 18.418 + 39 =
19. 19.10% of 470 =
20. 20.15 × 19 =
21. 21.75 × 5 =
22. 22.Best estimate of 799 × 8? (a) 12800 (b) 64000 (c) 6400 (d) 640
23. 23.Best estimate of 299 × 8? (a) 2400 (b) 4800 (c) 24000 (d) 240
24. 24.17 × 19 =
25. 25.44 × 15 =
26. 26.₹46.20 − ₹39.05 =
27. 27.129 + 27 =
28. 28.50% of 190 =
29. 29.Check with nines: 607 + 454 = 1061. Correct or wrong? (a) wrong (b) correct
30. 30.11 × 17 =
31. 31.33 + 68 =
32. 32.341 − 76 =
33. 33.91² =
34. 34.9 + 4 + 6 + 2 + 9 =
35. 35.161 − 29 =
36. 36.56 × 15 =
37. 37.311 + 77 =
38. 38.85 × 5 =
39. 39.Check with nines: 18 × 97 = 1746. Correct or wrong? (a) correct (b) wrong
40. 40.15% of 270 =

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