Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 760 · 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. 1.81² =
2. 2.183 − 38 =
3. 3.₹80.45 + ₹44.15 =
4. 4.78 + 55 + 54 + 38 =
5. 5.50% of 630 =
6. 6.12 × 12 =
7. 7.₹63.30 − ₹15.05 =
8. 8.13 × 19 =
9. 9.21² =
10. 10.₹12.80 + ₹42.80 =
11. 11.850 ÷ 50 =
12. 12.86 × 5 =
13. 13.Check with nines: 573 + 411 = 984. Correct or wrong? (a) correct (b) wrong
14. 14.15% of 880 =
15. 15.Best estimate of 202 × 4? (a) 1600 (b) 8000 (c) 800 (d) 80
16. 16.460 − 29 =
17. 17.Best estimate of 41 × 68? (a) 5600 (b) 28000 (c) 2800 (d) 280
18. 18.Check with nines: 84 × 92 = 7728. Correct or wrong? (a) wrong (b) correct
19. 19.49 + 27 + 44 + 36 =
20. 20.₹92.05 − ₹37.80 =
21. 21.₹22.60 − ₹9.90 =
22. 22.₹95.50 + ₹23.45 =
23. 23.91² =
24. 24.61² =
25. 25.153 × 4 =
26. 26.Best estimate of 28 × 81? (a) 2400 (b) 240 (c) 24000 (d) 4800
27. 27.21 × 15 =
28. 28.9 × 15 =
29. 29.44 + 58 + 23 + 16 =
30. 30.Check with nines: 71 × 15 = 1065. Correct or wrong? (a) correct (b) wrong
31. 31.625 ÷ 25 =
32. 32.₹39.60 − ₹35.75 =
33. 33.62 × 15 =
34. 34.21² =
35. 35.77 × 5 =
36. 36.99 × 4 =
37. 37.43 + 33 + 72 + 40 =
38. 38.₹37.05 + ₹12.15 =
39. 39.Best estimate of 797 × 9? (a) 7200 (b) 14400 (c) 72000 (d) 720
40. 40.9 × 15 =

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