Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 668 · 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. 1.76 − 19 =
2. 2.25 + 6 =
3. 3.26 + 41 =
4. 4.37 + 21 =
5. 5.7 + 9 =
6. 6.6 + ? = 10
7. 7.67 + ? = 100
8. 8.Double 18 =
9. 9.280 ÷ 8 =
10. 10.You buy a box of crayons for ₹11 and a pen for ₹35. You pay with a ₹100 note. How much change do you get, in rupees?
11. 11.You buy a water bottle for ₹24 and pay with a ₹100 note. How much change do you get, in rupees?
12. 12.Best estimate of 59 × 26? (a) 1800 (b) 180 (c) 18000
13. 13.Half of 126 =
14. 14.71 × 5 =
15. 15.25 × 6 =
16. 16.12 + 13 =
17. 17.A cricket match starts at 2:25 and the first innings ends at 3:20. How many minutes did the innings last?
18. 18.648 ÷ 9 =
19. 19.Best estimate of 507 + 123? (a) 600 (b) 800 (c) 400
20. 20.You start your homework at 8:40 and finish at 10:10. How many minutes did you work?
21. 21.8 + 9 =
22. 22.Best estimate of 38 × 79? (a) 3200 (b) 320 (c) 32000
23. 23.312 ÷ 8 =
24. 24.58 + 19 =
25. 25.86 − 44 =
26. 26.208 ÷ 8 =
27. 27.83 + ? = 100
28. 28.112 ÷ 8 =
29. 29.Double 57 =
30. 30.18² =
31. 31.25 + ? = 100
32. 32.19 × 3 =
33. 33.144 ÷ 3 =
34. 34.20 + 19 =
35. 35.What is the remainder when 56 is divided by 5?
36. 36.29 × 8 =
37. 37.62 × 9 =
38. 38.You buy a pencil box for ₹38 and a pen for ₹40. You pay with a ₹100 note. How much change do you get, in rupees?
39. 39.You buy a box of crayons for ₹251 and pay with a ₹500 note. How much change do you get, in rupees?
40. 40.Double 91 =

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