Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 386 · 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. 1.373 − 39 =
2. 2.60 × 4 =
3. 3.14 × 15 =
4. 4.198 + 17 =
5. 5.139 − 88 =
6. 6.24 + 52 + 20 + 61 =
7. 7.₹89.20 − ₹2.95 =
8. 8.16 × 12 =
9. 9.1350 ÷ 50 =
10. 10.315 − 67 =
11. 11.15% of 250 =
12. 12.Best estimate of 18 × 29? (a) 6000 (b) 60 (c) 1200 (d) 600
13. 13.19² =
14. 14.1300 ÷ 25 =
15. 15.₹75.35 + ₹14.35 =
16. 16.12 × 12 =
17. 17.12 × 15 =
18. 18.₹84.85 − ₹47.20 =
19. 19.₹85.20 − ₹27.10 =
20. 20.Best estimate of 41 × 88? (a) 360 (b) 36000 (c) 3600 (d) 7200
21. 21.Check with nines: 966 + 517 = 1483. Correct or wrong? (a) wrong (b) correct
22. 22.300 ÷ 50 =
23. 23.₹49.20 + ₹15.10 =
24. 24.63 × 15 =
25. 25.21² =
26. 26.16 × 50 =
27. 27.Best estimate of 402 × 9? (a) 7200 (b) 36000 (c) 360 (d) 3600
28. 28.74 + 88 =
29. 29.49² =
30. 30.Best estimate of 798 × 3? (a) 240 (b) 2400 (c) 24000 (d) 4800
31. 31.3 + 4 + 8 + 7 + 3 =
32. 32.18 × 17 =
33. 33.19 × 12 =
34. 34.335 ÷ 5 =
35. 35.3 + 2 + 2 + 8 =
36. 36.20 × 15 =
37. 37.750 ÷ 5 =
38. 38.Check with nines: 639 + 202 = 841. Correct or wrong? (a) correct (b) wrong
39. 39.2 + 2 + 8 + 2 =
40. 40.21² =

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