Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 17 · 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.Best estimate of 497 × 7? (a) 35000 (b) 350 (c) 7000 (d) 3500
2. 2.₹90.30 + ₹4.10 =
3. 3.447 + 98 =
4. 4.91² =
5. 5.Best estimate of 697 × 3? (a) 21000 (b) 210 (c) 2100 (d) 4200
6. 6.36 + 79 + 68 + 68 =
7. 7.21² =
8. 8.2 + 1 + 9 + 9 =
9. 9.Best estimate of 59 × 91? (a) 10800 (b) 54000 (c) 5400 (d) 540
10. 10.₹16.90 − ₹6.80 =
11. 11.1 + 1 + 4 + 8 + 9 =
12. 12.Check with nines: 69 × 58 = 4004. Correct or wrong? (a) wrong (b) correct
13. 13.Check with nines: 32 × 34 = 1088. Correct or wrong? (a) wrong (b) correct
14. 14.₹54.55 + ₹11.05 =
15. 15.223 + 27 =
16. 16.₹14.45 − ₹9.75 =
17. 17.6 + 4 + 4 + 4 + 8 =
18. 18.21² =
19. 19.19² =
20. 20.₹83.40 − ₹14.20 =
21. 21.320 ÷ 5 =
22. 22.19² =
23. 23.51² =
24. 24.437 + 29 =
25. 25.6 + 4 + 4 + 6 + 4 =
26. 26.11 × 14 =
27. 27.398 + 47 =
28. 28.584 − 46 =
29. 29.10% of 780 =
30. 30.25% of 660 =
31. 31.2 + 9 + 2 + 6 + 8 =
32. 32.24 × 4 =
33. 33.Best estimate of 48 × 59? (a) 6000 (b) 30000 (c) 300 (d) 3000
34. 34.12 × 11 =
35. 35.381 − 37 =
36. 36.Check with nines: 94 × 55 = 5167. Correct or wrong? (a) wrong (b) correct
37. 37.13 + 32 + 61 + 84 =
38. 38.13 + 77 + 73 + 36 =
39. 39.25% of 220 =
40. 40.15 × 15 =

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