Question

*Test*
*Class 7*
*Math* *Ex- 1.3*

1. In a class test containing 15 questions, 3 marks are given for every correct answer and (-1) marks given for every incorrect answer.
(i) Gurpreet attempts all the questions but only 9 of her answers are correct. What is her total score?
(ii) One of her friends gets only 5 answers correct. What will be her score?

2.Simplify.
(i)(-25) × 72+(-25) × 42
(ii) 8 X 13 + 8 X (-7)

3.
a x (b + c) =a x b+a x c is called
(a) commutative property
(b) associative property
(c) distributive property
(d) closure property.

4. The integer whose product with (-1) is 1, is
(a) -1
(b) 1
(c) 0
(d) none of these.

5. The integer whose product with (-1) is 0 , is
(a) -1
(b) 1
(c) 0
(d) none of these.​

Answer 1

Answer:

plz mark me as brainlist

Answer 2

Answer:

1-i)___Marks given for one correct answer =4

So, marks given for 9 correct answers are

=4 X 9 = 36

Marks given for one incorrect answer

=-2

So, marks given for 6=(15-9) incorrect answers

= (-2) X 6 =-12

Therefore, Gurpreet's total score is

= 36 - 12 = 24