Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 222 · 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. 1.331 + 17 =
2. 2.163 − 39 =
3. 3.61 + 29 + 13 + 26 =
4. 4.₹8.25 + ₹25.75 =
5. 5.73 + 43 + 30 + 14 =
6. 6.8 × 15 =
7. 7.Best estimate of 18 × 31? (a) 6000 (b) 60 (c) 600 (d) 1200
8. 8.14 × 14 =
9. 9.37 × 15 =
10. 10.700 ÷ 25 =
11. 11.36 + 47 + 70 + 82 =
12. 12.94 × 5 =
13. 13.308 − 57 =
14. 14.56 × 5 =
15. 15.15% of 570 =
16. 16.4 × 15 =
17. 17.29² =
18. 18.351 + 29 =
19. 19.Check with nines: 223 + 709 = 932. Correct or wrong? (a) wrong (b) correct
20. 20.88 × 50 =
21. 21.10% of 840 =
22. 22.1 + 9 + 1 + 2 + 2 =
23. 23.57 × 8 =
24. 24.80 × 4 =
25. 25.Check with nines: 150 + 200 = 350. Correct or wrong? (a) correct (b) wrong
26. 26.158 × 4 =
27. 27.1250 ÷ 50 =
28. 28.₹46.75 − ₹28.90 =
29. 29.Check with nines: 292 + 275 = 563. Correct or wrong? (a) wrong (b) correct
30. 30.429 − 47 =
31. 31.700 ÷ 50 =
32. 32.7 + 3 + 4 + 8 + 6 =
33. 33.91 − 78 =
34. 34.Check with nines: 499 + 757 = 1256. Correct or wrong? (a) correct (b) wrong
35. 35.20% of 410 =
36. 36.83 − 27 =
37. 37.3 + 9 + 5 + 2 + 8 =
38. 38.499 + 67 =
39. 39.Check with nines: 194 + 541 = 742. Correct or wrong? (a) wrong (b) correct
40. 40.69² =

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