Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 103 · 40 questions

How to do it in your head (Look first): A 9, 19 or 99 → round and adjust. Two close numbers → count up (or near doubles when adding). × or ÷ by 4 or 8 → double or halve; other sums → split into tens and ones.

1. 1.87 − 55 =
2. 2.116 ÷ 4 =
3. 3.1018 − 981 =
4. 4.43 × 8 =
5. 5.A cricket match starts at 3:55 and the first innings ends at 4:25. How many minutes did the innings last?
6. 6.55 − 41 =
7. 7.14 + 15 =
8. 8.51 × 6 =
9. 9.Best estimate of 174 + 624? (a) 600 (b) 800 (c) 1000
10. 10.120 ÷ 4 =
11. 11.28 + 6 =
12. 12.512 − 477 =
13. 13.13² =
14. 14.152 ÷ 8 =
15. 15.66 ÷ 3 =
16. 16.59 + 29 =
17. 17.Half of 124 =
18. 18.10% of ₹490 =
19. 19.30 × 4 =
20. 20.You buy a water bottle for ₹33 and a pen for ₹29. You pay with a ₹100 note. How much change do you get, in rupees?
21. 21.21² =
22. 22.18 × 8 =
23. 23.Best estimate of 43 × 46? (a) 20000 (b) 200 (c) 2000
24. 24.46 children stand in rows of 9. How many full rows can they make?
25. 25.You buy a bag of mangoes for ₹73 and pay with a ₹100 note. How much change do you get, in rupees?
26. 26.440 ÷ 5 =
27. 27.22² =
28. 28.25% of ₹200 =
29. 29.You buy a box of crayons for ₹19 and a pen for ₹11. You pay with a ₹100 note. How much change do you get, in rupees?
30. 30.50% of ₹230 =
31. 31.6 + ? = 10
32. 32.29 + 30 =
33. 33.Best estimate of 26 × 94? (a) 270 (b) 2700 (c) 27000
34. 34.57 + 72 =
35. 35.Double 82 =
36. 36.40 + 45 =
37. 37.What is the remainder when 118 is divided by 9?
38. 38.Best estimate of 46 × 59? (a) 3000 (b) 30000 (c) 300
39. 39.66 + 9 =
40. 40.81 − 29 =

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