Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 141 · 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. 1.495 ÷ 5 =
2. 2.175 − 29 =
3. 3.358 + 17 =
4. 4.289 + 37 =
5. 5.₹77.10 + ₹3.30 =
6. 6.125 × 4 =
7. 7.8 + 5 + 9 + 7 + 1 =
8. 8.59² =
9. 9.17 + 58 + 72 + 88 =
10. 10.Best estimate of 42 × 18? (a) 800 (b) 1600 (c) 80 (d) 8000
11. 11.725 ÷ 25 =
12. 12.52 × 4 =
13. 13.377 + 79 =
14. 14.195 − 69 =
15. 15.280 + 97 =
16. 16.₹31.05 − ₹16.70 =
17. 17.10% of 670 =
18. 18.Check with nines: 825 + 883 = 1708. Correct or wrong? (a) correct (b) wrong
19. 19.8 + 1 + 5 + 5 =
20. 20.16 × 14 =
21. 21.15% of 60 =
22. 22.Check with nines: 24 × 90 = 2162. Correct or wrong? (a) wrong (b) correct
23. 23.12 × 15 =
24. 24.6 + 2 + 9 + 1 =
25. 25.Best estimate of 597 × 8? (a) 480 (b) 4800 (c) 48000 (d) 9600
26. 26.516 − 99 =
27. 27.131 × 4 =
28. 28.6 + 2 + 4 + 5 =
29. 29.Check with nines: 168 + 943 = 1107. Correct or wrong? (a) correct (b) wrong
30. 30.47 + 97 =
31. 31.28 × 5 =
32. 32.41 × 15 =
33. 33.107 + 98 =
34. 34.18 × 19 =
35. 35.62 × 15 =
36. 36.175 − 19 =
37. 37.60 × 15 =
38. 38.128 × 4 =
39. 39.346 − 28 =
40. 40.19² =

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