Test of Chapter: 1 (Integers) | Class: 7

            Test of Chapter: 1 (Integers)             Class: 7  Time: 45 minutes                                                 M.M. 15

Question 1
What should be subtracted from -9876 to obtain -9512?                                 (1)

Question 2
The temperature of a city is 40C. Next day the temperature falls by 50C. What is the temperature of the city next day?                                                                      (1)

Question 3.              
Fill in the blanks
* Sum of integer and its additive inverse is ____________
* -36 ÷ (_______)=-9.                                                                                           (1)

Question 4
Mark the correct option.                                                                                     (2)
* Sum of two negative numbers is always
    * Positive
    * Negative
    * 0
    * 1
* Which property is reflected in this equation 7×5=5×7
    * Closure
    * Commutative
    * Associative
    * Distributive

Question 5
Verify a-(-b) =a + b for the following values of ‘a’ and ‘b’
* a=34      b=73.                                                                                                  (1)

Question 6
Write down the pair of integers whose.                                                          (1)
* Sum is -4
* Sum is 0
Verify the following
* (-22) × [(-4) + (-5)]=[(-22) × (-4)] + [(-22) × (-5)]                                         (2)

Question 7
An elevator descends into a mine shaft at the rate of 6 m/min. If the descent starts from 10 m above the ground level, how long will it take to reach -350 m.                     (3)

Question 8
In a test (+5) marks are given for every correct answer and (-2) marks are given for every incorrect answer and 0 for answer not attempted. Ram gets 3 correct and 4 incorrect out of 7 questions he attempted. What is his score?                                                                              (3)