Welcome to your 07 Math Free

1. 
The following figure is the figure of a rectangular roof tent and its both triangular parts are open. Find the area of both triangular parts of the figure if base of the each triangular part is 5 cm long.
2. 
Shifting one term from one side of an equation to another side with a change of sign is known as:
3. 
If "t" is a common divisor of p and q, then p/q = (p/t)/? in place of ?=
4. 
If 1 is subtracted from the LHS of an equation, the value of the RHS is __________ by 1.
5. 
If the sum of two numbers is -12. If one of them is 18, find the other number?
6. 
If two ratios are equivalent, then the four quantities are said to be in ______.
7. 
4x + 5 = – 7 has_______ solution
8. 
An elevator descends into a coal mine at the rate of 10 m per minute. If it starts 10 m above the ground level how long it takes to reach -100 m?
9. 
Which of the following shows the maximum rise in temperature?
10. 
Ragini’s income is 25% more than Rohin. How much percent is Rohin’s income less than Ragini?
11. 
If the sum of two consecutive numbers is -27, find the numbers?
12. 
If x : 30 :: 7 : 5 then value of x is :
13. 
Find the value of 45% of 280 + 28% of 450
14. 
If the sides of a parallelogram are increased to twice its original lengths, how much will the perimeter of the new parallelogram increase?
15. 
In the standard form of a rational number, the common factor of numerator and denominator is always:
16. 
If 2/5 of a number is 16, then the number is _____________
17. 
Multiplicative inverse of -3/5 is
18. 
A rational number is defined as a number that can be expressed in the form p/q , where p and q are integers and
19. 
The literal number involved in each equation is called ____________
20. 
A piece of string is 36 cm long. What will be the length of each side. If the string is used to form a square?