Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 219 · 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.₹16.55 − ₹4.15 =
2. 2.1% of 210 =
3. 3.1125 ÷ 25 =
4. 4.24 × 15 =
5. 5.178 − 99 =
6. 6.20 × 15 =
7. 7.90 − 48 =
8. 8.Best estimate of 48 × 69? (a) 35000 (b) 350 (c) 7000 (d) 3500
9. 9.Best estimate of 99 × 6? (a) 6000 (b) 600 (c) 60 (d) 1200
10. 10.141 − 36 =
11. 11.372 − 99 =
12. 12.1600 ÷ 50 =
13. 13.114 + 39 =
14. 14.Best estimate of 91 × 91? (a) 810 (b) 16200 (c) 81000 (d) 8100
15. 15.60 × 15 =
16. 16.50 × 15 =
17. 17.259 + 59 =
18. 18.Best estimate of 698 × 5? (a) 3500 (b) 7000 (c) 350 (d) 35000
19. 19.Check with nines: 838 + 671 = 1512. Correct or wrong? (a) wrong (b) correct
20. 20.Check with nines: 32 × 81 = 2589. Correct or wrong? (a) correct (b) wrong
21. 21.80 × 5 =
22. 22.₹83.20 − ₹12.10 =
23. 23.20 × 8 =
24. 24.865 ÷ 5 =
25. 25.53 × 8 =
26. 26.229 + 49 =
27. 27.444 + 19 =
28. 28.₹33.65 − ₹23.30 =
29. 29.5% of 510 =
30. 30.510 ÷ 5 =
31. 31.₹96.10 + ₹48.70 =
32. 32.17 × 17 =
33. 33.80 × 4 =
34. 34.51² =
35. 35.12 × 11 =
36. 36.17 × 18 =
37. 37.Best estimate of 89 × 61? (a) 54000 (b) 10800 (c) 5400 (d) 540
38. 38.39² =
39. 39.1700 ÷ 50 =
40. 40.47 × 15 =

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