Maths Demo test for class 7

Time:

Total Question: 15

1.

Evaluate [(-48)div 16]div 3

 
 
   
2.

Which has the greatest quotient?

 
 
   
3.

The set of integers is not closed under

 
 
   
4.

1763	imes (-2)+(-1763)	imes 98=

 
 
   
5.

Evaluate (-6+34)div (-14)+2

 
 
   
6.

The temperature at noon at a certain place was 12 degrees above zero. If it decreases at a rate of 2 degrees per hour until midnight, at what time would it be 10 degrees below zero?

 
 
   
7.

Ratio of: (-2-5)	imes(-6)  to   (-2)+(-5)	imes(-6). is

 
 
   
8.

Which of the following expressions are equal to -20?

1. -4	imes 5

2. -32 + 10 - (-2) 

3. -6	imes 2[-2	imes-4]

4. 5	imes (-2)+(-3)	imes4

 
 
   
9.

A certain freezing process requires that room temperature be lowered from small 40^circC at the rate of small 5^circC every hour. What will be the room temperature 10 hours after the process begins?

 
 
   
10.

Which of the following on simplification is not negative?

 
 
   
11.

In a quiz, positive marks were given for correct answers and negative marks for incorrect answers. If Rashid’s scores in six successive rounds were 30, 10,-12,-5, -15,-20, what is his total score at the end?

 
 
   
12.

What will be the product of (-5) × (6) × (-7) × (-20)

 
 
   
13.

Simplify: frac{2}{3}X 24 X 235

 
 
   
14.

7049div (-7049)

 
 
   
15.

Using properties of integers, find the value of 20935 	imes 99 - (-20935)