Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 233 · 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. 1.148 + 69 =
2. 2.69 × 5 =
3. 3.347 + 47 =
4. 4.Check with nines: 91 × 85 = 7735. Correct or wrong? (a) correct (b) wrong
5. 5.19 × 15 =
6. 6.9 + 1 + 1 + 7 =
7. 7.29 × 15 =
8. 8.39 × 8 =
9. 9.725 ÷ 25 =
10. 10.94 × 4 =
11. 11.131 × 4 =
12. 12.6 + 3 + 3 + 7 =
13. 13.82 × 5 =
14. 14.Check with nines: 341 + 910 = 1251. Correct or wrong? (a) wrong (b) correct
15. 15.557 − 86 =
16. 16.14 × 15 =
17. 17.1 + 4 + 2 + 6 =
18. 18.12 × 12 =
19. 19.14 × 16 =
20. 20.₹81.60 − ₹20.85 =
21. 21.53 × 15 =
22. 22.Best estimate of 397 × 5? (a) 20000 (b) 4000 (c) 2000 (d) 200
23. 23.49 × 8 =
24. 24.31 × 50 =
25. 25.558 − 76 =
26. 26.₹93.30 − ₹42.35 =
27. 27.340 − 59 =
28. 28.25% of 780 =
29. 29.₹15.75 + ₹2.85 =
30. 30.86 × 5 =
31. 31.49² =
32. 32.319 + 19 =
33. 33.56 + 75 + 20 + 80 =
34. 34.17 × 19 =
35. 35.Best estimate of 599 × 7? (a) 8400 (b) 4200 (c) 420 (d) 42000
36. 36.41 + 27 + 24 + 70 =
37. 37.₹56.85 + ₹31.30 =
38. 38.64 × 5 =
39. 39.4 × 15 =
40. 40.2 + 8 + 5 + 6 =

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