Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 382 · 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. 1.280 − 17 =
2. 2.199 + 89 =
3. 3.₹88.40 + ₹14.40 =
4. 4.5% of 870 =
5. 5.9 × 15 =
6. 6.Check with nines: 17 × 32 = 542. Correct or wrong? (a) correct (b) wrong
7. 7.21 × 15 =
8. 8.441 − 16 =
9. 9.48 × 15 =
10. 10.12 × 13 =
11. 11.84 − 79 =
12. 12.21² =
13. 13.450 ÷ 50 =
14. 14.₹72.80 + ₹37.70 =
15. 15.Check with nines: 23 × 42 = 966. Correct or wrong? (a) correct (b) wrong
16. 16.Check with nines: 97 × 74 = 7178. Correct or wrong? (a) correct (b) wrong
17. 17.₹25.95 − ₹8.80 =
18. 18.42 × 15 =
19. 19.15% of 900 =
20. 20.15% of 240 =
21. 21.970 ÷ 5 =
22. 22.81² =
23. 23.95 × 5 =
24. 24.194 − 48 =
25. 25.11 × 15 =
26. 26.123 × 4 =
27. 27.1550 ÷ 50 =
28. 28.4 + 6 + 8 + 4 =
29. 29.79² =
30. 30.14 × 14 =
31. 31.Best estimate of 31 × 78? (a) 24000 (b) 240 (c) 2400 (d) 4800
32. 32.136 × 4 =
33. 33.4 + 7 + 4 + 6 + 2 =
34. 34.Check with nines: 955 + 209 = 1164. Correct or wrong? (a) correct (b) wrong
35. 35.30 × 15 =
36. 36.16 × 4 =
37. 37.58 × 8 =
38. 38.186 − 86 =
39. 39.101 + 28 =
40. 40.63 × 15 =

Free speed calculation lessons, practice and worksheets at talentjr.in/speed-maths