Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 601 · 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. 1.210 − 26 =
2. 2.7 × 15 =
3. 3.Best estimate of 797 × 9? (a) 14400 (b) 72000 (c) 7200 (d) 720
4. 4.8 + 2 + 2 + 7 =
5. 5.8 + 3 + 7 + 6 =
6. 6.775 ÷ 25 =
7. 7.9 + 5 + 3 + 1 =
8. 8.₹28.35 + ₹31.20 =
9. 9.287 − 96 =
10. 10.40 + 37 =
11. 11.100 − 46 =
12. 12.₹94.55 − ₹48.10 =
13. 13.9 + 9 + 1 + 2 =
14. 14.11 × 17 =
15. 15.Check with nines: 71 × 40 = 2840. Correct or wrong? (a) wrong (b) correct
16. 16.6 + 3 + 2 + 4 + 3 =
17. 17.17 × 15 =
18. 18.82 + 69 =
19. 19.81² =
20. 20.61² =
21. 21.77 × 50 =
22. 22.Check with nines: 35 × 52 = 1820. Correct or wrong? (a) correct (b) wrong
23. 23.340 + 97 =
24. 24.48 × 15 =
25. 25.77 × 5 =
26. 26.Best estimate of 81 × 69? (a) 5600 (b) 11200 (c) 560 (d) 56000
27. 27.21² =
28. 28.31² =
29. 29.₹58.90 − ₹25.25 =
30. 30.315 ÷ 5 =
31. 31.54 + 17 + 38 + 36 =
32. 32.₹14.45 + ₹18.95 =
33. 33.325 ÷ 25 =
34. 34.299 − 96 =
35. 35.5 + 5 + 3 + 7 =
36. 36.Check with nines: 735 + 259 = 991. Correct or wrong? (a) wrong (b) correct
37. 37.7 + 4 + 8 + 3 + 1 =
38. 38.15 × 13 =
39. 39.136 − 37 =
40. 40.26 + 15 + 24 + 23 =

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