Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 413 · 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. 1.595 − 38 =
2. 2.Best estimate of 69 × 31? (a) 4200 (b) 2100 (c) 210 (d) 21000
3. 3.7 × 15 =
4. 4.Check with nines: 237 + 220 = 462. Correct or wrong? (a) wrong (b) correct
5. 5.₹43.95 − ₹23.05 =
6. 6.8 + 8 + 5 + 1 + 2 =
7. 7.Check with nines: 29 × 15 = 435. Correct or wrong? (a) wrong (b) correct
8. 8.Check with nines: 87 × 36 = 3132. Correct or wrong? (a) wrong (b) correct
9. 9.₹27.75 + ₹39.90 =
10. 10.Check with nines: 71 × 49 = 3476. Correct or wrong? (a) wrong (b) correct
11. 11.80 + 31 + 83 + 12 =
12. 12.10% of 270 =
13. 13.218 − 47 =
14. 14.25% of 400 =
15. 15.26 + 78 + 19 + 25 =
16. 16.11 + 79 + 75 + 65 =
17. 17.1275 ÷ 25 =
18. 18.₹52.95 − ₹23.30 =
19. 19.5% of 540 =
20. 20.141 + 19 =
21. 21.1750 ÷ 50 =
22. 22.92 × 50 =
23. 23.1400 ÷ 25 =
24. 24.Check with nines: 549 + 159 = 708. Correct or wrong? (a) correct (b) wrong
25. 25.59² =
26. 26.Best estimate of 501 × 3? (a) 1500 (b) 15000 (c) 3000 (d) 150
27. 27.219 − 79 =
28. 28.950 ÷ 25 =
29. 29.59² =
30. 30.Best estimate of 92 × 62? (a) 54000 (b) 540 (c) 5400 (d) 10800
31. 31.Check with nines: 741 + 965 = 1700. Correct or wrong? (a) wrong (b) correct
32. 32.150 − 77 =
33. 33.₹81.50 + ₹8.60 =
34. 34.₹30.05 − ₹5.25 =
35. 35.24 × 4 =
36. 36.1 + 7 + 9 + 3 =
37. 37.5 + 5 + 7 + 7 + 3 =
38. 38.334 − 16 =
39. 39.284 + 57 =
40. 40.23 × 15 =

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