Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 714 · 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. 1.9 + 7 + 9 + 3 + 5 =
2. 2.35 + 35 + 54 + 17 =
3. 3.10% of 670 =
4. 4.₹94.90 − ₹25.10 =
5. 5.Check with nines: 12 × 21 = 249. Correct or wrong? (a) wrong (b) correct
6. 6.40 + 28 =
7. 7.325 + 57 =
8. 8.20% of 200 =
9. 9.336 + 47 =
10. 10.396 − 58 =
11. 11.27 + 36 + 13 + 68 =
12. 12.Check with nines: 28 × 84 = 2360. Correct or wrong? (a) wrong (b) correct
13. 13.₹15.95 + ₹30.05 =
14. 14.60 × 50 =
15. 15.510 ÷ 5 =
16. 16.165 + 87 =
17. 17.2 + 3 + 8 + 9 + 2 =
18. 18.Check with nines: 768 + 944 = 1712. Correct or wrong? (a) wrong (b) correct
19. 19.345 − 56 =
20. 20.7 + 1 + 9 + 8 + 3 =
21. 21.7 + 8 + 2 + 8 =
22. 22.9 + 3 + 4 + 6 + 3 =
23. 23.₹38.85 + ₹3.20 =
24. 24.3 + 3 + 7 + 9 =
25. 25.Best estimate of 61 × 39? (a) 240 (b) 2400 (c) 4800 (d) 24000
26. 26.318 + 97 =
27. 27.1 + 5 + 4 + 6 + 9 =
28. 28.51 + 70 + 20 + 15 =
29. 29.454 + 17 =
30. 30.Best estimate of 97 × 9? (a) 900 (b) 90 (c) 1800 (d) 9000
31. 31.79² =
32. 32.91 + 39 =
33. 33.20% of 560 =
34. 34.11 × 14 =
35. 35.₹83.70 + ₹37.45 =
36. 36.412 − 59 =
37. 37.₹54.40 + ₹19.65 =
38. 38.478 + 17 =
39. 39.1% of 310 =
40. 40.15 × 17 =

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