Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 555 · 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. 1.53 − 49 =
2. 2.29² =
3. 3.17 × 17 =
4. 4.190 ÷ 5 =
5. 5.82 + 27 + 43 + 29 =
6. 6.Best estimate of 899 × 4? (a) 3600 (b) 360 (c) 36000 (d) 7200
7. 7.81² =
8. 8.85 + 23 + 89 + 29 =
9. 9.73 × 8 =
10. 10.403 − 98 =
11. 11.44 + 31 + 32 + 81 =
12. 12.38 + 89 + 31 + 26 =
13. 13.19 × 19 =
14. 14.₹96.80 + ₹20.90 =
15. 15.393 + 39 =
16. 16.1700 ÷ 50 =
17. 17.Best estimate of 19 × 62? (a) 12000 (b) 1200 (c) 2400 (d) 120
18. 18.21² =
19. 19.228 + 27 =
20. 20.50 × 5 =
21. 21.145 × 4 =
22. 22.47 + 71 + 65 + 37 =
23. 23.Best estimate of 88 × 32? (a) 27000 (b) 2700 (c) 5400 (d) 270
24. 24.481 − 28 =
25. 25.20% of 650 =
26. 26.₹22.50 + ₹37.05 =
27. 27.Best estimate of 398 × 6? (a) 24000 (b) 4800 (c) 2400 (d) 240
28. 28.Check with nines: 738 + 271 = 1009. Correct or wrong? (a) wrong (b) correct
29. 29.5% of 60 =
30. 30.169 + 79 =
31. 31.4 + 5 + 1 + 5 =
32. 32.Check with nines: 264 + 974 = 1237. Correct or wrong? (a) wrong (b) correct
33. 33.12 × 14 =
34. 34.366 − 17 =
35. 35.208 − 28 =
36. 36.₹37.05 − ₹24.30 =
37. 37.11 × 17 =
38. 38.Check with nines: 444 + 930 = 1375. Correct or wrong? (a) wrong (b) correct
39. 39.14 × 19 =
40. 40.195 + 99 =

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