Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 722 · 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. 1.49² =
2. 2.27 × 15 =
3. 3.316 + 29 =
4. 4.84 × 5 =
5. 5.Check with nines: 46 × 97 = 4462. Correct or wrong? (a) wrong (b) correct
6. 6.11 + 65 + 14 + 32 =
7. 7.Check with nines: 81 × 71 = 5750. Correct or wrong? (a) wrong (b) correct
8. 8.16 × 17 =
9. 9.Best estimate of 19 × 69? (a) 1400 (b) 14000 (c) 2800 (d) 140
10. 10.59² =
11. 11.₹51.75 + ₹12.70 =
12. 12.₹71.15 + ₹35.90 =
13. 13.61 + 49 + 26 + 17 =
14. 14.357 − 19 =
15. 15.14 × 50 =
16. 16.32 × 5 =
17. 17.₹32.70 − ₹4.05 =
18. 18.17 × 15 =
19. 19.29² =
20. 20.45 × 50 =
21. 21.21 × 8 =
22. 22.70 × 8 =
23. 23.Check with nines: 74 × 44 = 3256. Correct or wrong? (a) wrong (b) correct
24. 24.102 × 4 =
25. 25.Best estimate of 301 × 8? (a) 240 (b) 4800 (c) 24000 (d) 2400
26. 26.49² =
27. 27.69² =
28. 28.14 × 18 =
29. 29.₹66.45 − ₹13.45 =
30. 30.Best estimate of 19 × 81? (a) 3200 (b) 16000 (c) 1600 (d) 160
31. 31.Best estimate of 39 × 19? (a) 800 (b) 80 (c) 8000 (d) 1600
32. 32.71 × 5 =
33. 33.79² =
34. 34.Best estimate of 798 × 8? (a) 640 (b) 64000 (c) 12800 (d) 6400
35. 35.1500 ÷ 25 =
36. 36.Check with nines: 75 × 97 = 7275. Correct or wrong? (a) wrong (b) correct
37. 37.77 × 4 =
38. 38.₹13.70 + ₹12.60 =
39. 39.18 × 8 =
40. 40.Best estimate of 61 × 92? (a) 54000 (b) 10800 (c) 5400 (d) 540

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