Welcome to your 06 Math Free

1. 
Find the value of 52 – 4 × ( 17 – 12 ) + 4 × 7
2. 
The greatest number which on rounding off to nearest thousands gives 2000, is
3. 
The HCF of two consecutive numbers is
4. 
5. 
The prime factorization of 88 is
6. 
Natural numbers are closed under subtraction.
7. 
The greatest composite number between 1 and 50 is
8. 
4 squares each of the side 10 cm have been cut from each corner of a square sheet of paper of size 100 cm x 100 cm. From the remaining piece of paper, an isosceles right triangle is removed whose equal sides are each of 10 cm length. Find the area of the remaining part of the paper.
9. 
Find the value of (–57) × (–19) + 57
10. 
Cost of 12 calculators is Rs. 1644. How much is the cost of 10 such calculators?
11. 
Which sign will come in the blank space? – 231 + 79 + 51 _________–399 + 159 + 81
12. 
The base of a parallelogram is thrice its height. If area is 972 sq m , find the base and height of the parallelogram?
13. 
LCM of 70 and 140 is _______
14. 
Rectangle MNOP is made up of four congruent rectangles. If the area of one of the rectangles is 8 sq m and length is 4 m, then find the perimeter of MNOP.
15. 
A certain freezing process requires the room temperature to be lowered from 50ºC at the rate of 8ºC every hour. What will be the room temperature 7 hours after the process begins?
16. 
A train can travel 488 km in 4 hours. How much distance can it cover in 24 hours?
17. 
A whole number is added to 10 and the same number is subtracted from 10. The sum of the resulting numbers is
18. 
Along a highway, there are teak tree on one side of the highway and neem on the other side. The teak trees are separated by 10 m and the neem trees are separated by 36 m. If an teak and a neem trees are both present at the point where the highway begins, after how much distance along the highway will they both be in front of each other again?
19. 
The least prime number is --------------------------
20. 
Difference between face value and place value of 6 in the number 567423 is