Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 586 · 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. 1.594 − 18 =
2. 2.6 × 15 =
3. 3.534 − 27 =
4. 4.15 × 15 =
5. 5.107 + 19 =
6. 6.39 × 5 =
7. 7.Check with nines: 374 + 316 = 690. Correct or wrong? (a) wrong (b) correct
8. 8.55 + 24 + 71 + 74 =
9. 9.44 × 4 =
10. 10.55 × 4 =
11. 11.47 × 8 =
12. 12.40 × 4 =
13. 13.5 + 5 + 6 + 2 =
14. 14.93 × 5 =
15. 15.16 × 13 =
16. 16.14 × 15 =
17. 17.49 + 87 =
18. 18.₹69.75 + ₹6.10 =
19. 19.Best estimate of 22 × 82? (a) 16000 (b) 3200 (c) 160 (d) 1600
20. 20.11 × 15 =
21. 21.Check with nines: 63 × 95 = 5993. Correct or wrong? (a) correct (b) wrong
22. 22.Best estimate of 22 × 79? (a) 16000 (b) 160 (c) 3200 (d) 1600
23. 23.Check with nines: 31 × 51 = 1581. Correct or wrong? (a) wrong (b) correct
24. 24.529 − 59 =
25. 25.Check with nines: 368 + 184 = 554. Correct or wrong? (a) wrong (b) correct
26. 26.27 × 15 =
27. 27.₹51.65 + ₹13.60 =
28. 28.139 − 89 =
29. 29.88 × 5 =
30. 30.Check with nines: 147 + 237 = 390. Correct or wrong? (a) correct (b) wrong
31. 31.17 × 11 =
32. 32.36 × 4 =
33. 33.₹38.10 − ₹8.40 =
34. 34.7 + 9 + 6 + 3 + 7 =
35. 35.158 + 88 =
36. 36.12 × 14 =
37. 37.19 × 15 =
38. 38.9 + 8 + 5 + 1 =
39. 39.586 − 88 =
40. 40.₹36.10 + ₹25.10 =

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