Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 359 · 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. 1.217 + 27 =
2. 2.16 + 50 + 40 + 45 =
3. 3.54 × 5 =
4. 4.₹83.05 + ₹11.10 =
5. 5.15% of 170 =
6. 6.69 × 50 =
7. 7.360 + 97 =
8. 8.76 + 24 + 47 + 67 =
9. 9.15 × 13 =
10. 10.Check with nines: 82 × 24 = 1968. Correct or wrong? (a) wrong (b) correct
11. 11.37 × 15 =
12. 12.Check with nines: 91 × 78 = 7099. Correct or wrong? (a) wrong (b) correct
13. 13.Best estimate of 102 × 5? (a) 5000 (b) 50 (c) 1000 (d) 500
14. 14.435 − 66 =
15. 15.6 + 1 + 4 + 5 =
16. 16.Best estimate of 39 × 82? (a) 3200 (b) 32000 (c) 320 (d) 6400
17. 17.Best estimate of 302 × 3? (a) 90 (b) 1800 (c) 900 (d) 9000
18. 18.₹99.20 − ₹38.85 =
19. 19.41² =
20. 20.700 ÷ 50 =
21. 21.13 × 11 =
22. 22.8 + 3 + 5 + 1 + 7 =
23. 23.1375 ÷ 25 =
24. 24.13 × 16 =
25. 25.255 + 68 =
26. 26.Best estimate of 902 × 6? (a) 540 (b) 5400 (c) 10800 (d) 54000
27. 27.1200 ÷ 50 =
28. 28.550 ÷ 50 =
29. 29.194 + 68 =
30. 30.145 ÷ 5 =
31. 31.85 × 5 =
32. 32.525 ÷ 25 =
33. 33.Best estimate of 198 × 8? (a) 1600 (b) 16000 (c) 3200 (d) 160
34. 34.4 + 9 + 5 + 5 =
35. 35.25% of 190 =
36. 36.41² =
37. 37.750 ÷ 25 =
38. 38.10 × 15 =
39. 39.₹32.15 + ₹37.25 =
40. 40.₹35.05 + ₹30.75 =

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