Welcome to your 07 Math Free

1. 
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?
2. 
Mohan bought a Mobile for ₹ 9000 and sold at the loss of ₹ 900.Find the selling price of the mobile.
3. 
All decimal numbers are also rational numbers.
4. 
A rectangular park of length 70 m and breadth 50 m is there in a locality. Two crossroads perpendicular to each other of width 6 m needs to be constructed in between the park for walking. Find the area of Horizontal Road.
5. 
Area of a right angled triangle is 30 sq cm. If its smallest side is 5 cm, then its hypotenuse is:
6. 
The sum of any two negative integers will be:
7. 
0.08 is equal to
8. 
When a number is multiplied by 5 is increased by 80, what is the number?
9. 
Area of a rectangle and the area of a circle are equal. If the dimensions of the rectangle are 14 cm x 11 cm, then radius of the circle is :
10. 
4x + 5 = – 7 has_______ solution
11. 
Find the value of 45% of 280 + 28% of 450
12. 
A number has two digits whose sum is 9. If 27 is added to the number; its digits get interchanged. Find the number.
13. 
Every integer is a rational number but every rational number need not be an integer.
14. 
If the diagonal of a square is 40 m then its area will be :
15. 
A piece of string is 36 cm long. What will be the length of each side. If the string is used to form an equilateral triangle?
16. 
Write 114 ÷ 207 as rational number in its standard form
17. 
The height of a plant is x meter now. It becomes Y times its self after one week. What will be height after two weeks?
18. 
There are _______ number of rational numbers between two rational numbers.
19. 
(-9) × 17 is not equal to:
20. 
Every integer to the left of zero on the number line will have a _______value.