Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 970 · 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. 1.126 − 76 =
2. 2.31 + 29 + 28 + 22 =
3. 3.142 + 69 =
4. 4.581 − 27 =
5. 5.50% of 760 =
6. 6.159 + 58 =
7. 7.Check with nines: 50 × 83 = 4150. Correct or wrong? (a) correct (b) wrong
8. 8.₹70.10 + ₹11.15 =
9. 9.53 × 8 =
10. 10.5 + 5 + 8 + 7 + 5 =
11. 11.8 × 15 =
12. 12.36 × 15 =
13. 13.59² =
14. 14.159 − 16 =
15. 15.3 + 1 + 6 + 7 =
16. 16.98 × 4 =
17. 17.Check with nines: 581 + 752 = 1333. Correct or wrong? (a) wrong (b) correct
18. 18.322 − 37 =
19. 19.235 ÷ 5 =
20. 20.510 ÷ 5 =
21. 21.80 × 5 =
22. 22.78 × 4 =
23. 23.270 + 17 =
24. 24.29 × 50 =
25. 25.21² =
26. 26.₹41.25 − ₹9.95 =
27. 27.29² =
28. 28.94 + 57 =
29. 29.10% of 280 =
30. 30.136 − 96 =
31. 31.50% of 800 =
32. 32.42 + 80 + 37 + 48 =
33. 33.8 + 1 + 4 + 5 + 6 =
34. 34.395 + 19 =
35. 35.Check with nines: 15 × 63 = 945. Correct or wrong? (a) wrong (b) correct
36. 36.454 + 69 =
37. 37.450 ÷ 50 =
38. 38.430 − 78 =
39. 39.44 × 50 =
40. 40.Check with nines: 57 × 46 = 2622. Correct or wrong? (a) wrong (b) correct

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