Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 196 · 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. 1.91² =
2. 2.735 ÷ 5 =
3. 3.9 + 2 + 1 + 6 =
4. 4.39 + 12 + 46 + 38 =
5. 5.158 × 4 =
6. 6.12 × 17 =
7. 7.Check with nines: 703 + 328 = 1031. Correct or wrong? (a) correct (b) wrong
8. 8.Best estimate of 102 × 8? (a) 80 (b) 1600 (c) 8000 (d) 800
9. 9.Check with nines: 683 + 911 = 1601. Correct or wrong? (a) correct (b) wrong
10. 10.145 ÷ 5 =
11. 11.19² =
12. 12.1% of 830 =
13. 13.71² =
14. 14.24 × 15 =
15. 15.Check with nines: 40 × 40 = 1600. Correct or wrong? (a) wrong (b) correct
16. 16.125 ÷ 25 =
17. 17.480 + 78 =
18. 18.₹49.45 − ₹27.50 =
19. 19.50% of 620 =
20. 20.1425 ÷ 25 =
21. 21.58 × 15 =
22. 22.16 × 8 =
23. 23.13 × 13 =
24. 24.Best estimate of 91 × 82? (a) 72000 (b) 14400 (c) 720 (d) 7200
25. 25.3 + 8 + 7 + 4 =
26. 26.₹63.95 + ₹48.40 =
27. 27.Best estimate of 202 × 3? (a) 1200 (b) 600 (c) 60 (d) 6000
28. 28.446 + 78 =
29. 29.89 × 50 =
30. 30.95 × 50 =
31. 31.₹11.80 + ₹7.45 =
32. 32.330 + 38 =
33. 33.4 + 3 + 7 + 4 =
34. 34.15 × 5 =
35. 35.507 − 46 =
36. 36.₹46.85 − ₹46.25 =
37. 37.33 + 32 + 49 + 20 =
38. 38.26 + 52 + 46 + 66 =
39. 39.74 × 8 =
40. 40.Check with nines: 228 + 334 = 559. Correct or wrong? (a) wrong (b) correct

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