Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 595 · 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. 1.13 × 15 =
2. 2.72 + 26 + 12 + 60 =
3. 3.31 + 14 + 53 + 16 =
4. 4.₹8.95 + ₹14.60 =
5. 5.26 + 21 + 56 + 33 =
6. 6.Check with nines: 959 + 567 = 1530. Correct or wrong? (a) wrong (b) correct
7. 7.Check with nines: 27 × 97 = 2619. Correct or wrong? (a) wrong (b) correct
8. 8.7 + 3 + 4 + 9 =
9. 9.235 + 29 =
10. 10.17 + 20 + 50 + 66 =
11. 11.5 + 1 + 1 + 5 + 2 =
12. 12.625 ÷ 25 =
13. 13.79² =
14. 14.17 × 19 =
15. 15.11 × 15 =
16. 16.16 × 8 =
17. 17.₹70.75 + ₹23.95 =
18. 18.₹96.85 − ₹30.70 =
19. 19.11 × 15 =
20. 20.23 × 8 =
21. 21.84 × 50 =
22. 22.19² =
23. 23.38 × 50 =
24. 24.140 + 77 =
25. 25.8 + 3 + 3 + 7 =
26. 26.Best estimate of 28 × 41? (a) 1200 (b) 120 (c) 2400 (d) 12000
27. 27.453 − 38 =
28. 28.297 + 67 =
29. 29.59² =
30. 30.1 + 9 + 1 + 2 =
31. 31.21² =
32. 32.19 × 15 =
33. 33.Best estimate of 18 × 48? (a) 100 (b) 2000 (c) 10000 (d) 1000
34. 34.76 × 5 =
35. 35.12 × 18 =
36. 36.₹80.30 − ₹29.15 =
37. 37.51² =
38. 38.7 + 3 + 2 + 7 =
39. 39.Check with nines: 30 × 76 = 2280. Correct or wrong? (a) wrong (b) correct
40. 40.79 × 50 =

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