Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 849 · 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 × 4? (a) 4000 (b) 2000 (c) 20000 (d) 200
2. 2.₹33.35 + ₹40.55 =
3. 3.Best estimate of 98 × 8? (a) 80 (b) 800 (c) 8000 (d) 1600
4. 4.71² =
5. 5.₹24.80 − ₹19.45 =
6. 6.2 + 5 + 1 + 4 + 6 =
7. 7.Best estimate of 72 × 29? (a) 2100 (b) 21000 (c) 210 (d) 4200
8. 8.350 ÷ 50 =
9. 9.92 + 69 =
10. 10.49² =
11. 11.42 × 15 =
12. 12.95 × 5 =
13. 13.14 × 15 =
14. 14.25 × 15 =
15. 15.Best estimate of 902 × 9? (a) 16200 (b) 81000 (c) 8100 (d) 810
16. 16.339 − 47 =
17. 17.98 × 50 =
18. 18.28 × 5 =
19. 19.90 ÷ 5 =
20. 20.420 − 28 =
21. 21.Best estimate of 22 × 38? (a) 8000 (b) 80 (c) 800 (d) 1600
22. 22.86 − 38 =
23. 23.57 × 15 =
24. 24.Best estimate of 38 × 19? (a) 80 (b) 1600 (c) 8000 (d) 800
25. 25.Best estimate of 297 × 4? (a) 1200 (b) 120 (c) 2400 (d) 12000
26. 26.3 + 3 + 7 + 6 =
27. 27.530 − 47 =
28. 28.10% of 90 =
29. 29.503 − 96 =
30. 30.₹71.15 − ₹14.60 =
31. 31.7 + 5 + 5 + 8 + 2 =
32. 32.41² =
33. 33.Check with nines: 582 + 726 = 1309. Correct or wrong? (a) wrong (b) correct
34. 34.1300 ÷ 25 =
35. 35.39² =
36. 36.Best estimate of 97 × 4? (a) 800 (b) 400 (c) 40 (d) 4000
37. 37.₹34.25 − ₹4.50 =
38. 38.40 × 5 =
39. 39.Check with nines: 28 × 85 = 2380. Correct or wrong? (a) correct (b) wrong
40. 40.15 + 31 + 25 + 39 =

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