ML Aggarwal CBSE Solutions Class 7 Math 1st Chapter Integers Exercise 1.3
Ex – 1.3
(1) Find the following products:
(i) 7 x (-35)
(ii) (-13) x (-15)
(iii) (-12) x (-11) x (-10)
(iv) (-13) x 0 x (-24)
(v) (-1) x (-2) x (-3) x 4
(vi) (-3) x (-6) x (-2) x (-1)
(2) Verify
(i) 37 x [6 + (-3)] = 37 x 6 + 37 x (-3)
(ii) (-21) x [(-6) + (-4)] = (-21) x (-6) + (-21) x (-4)
(3) (i) 8 x 53 x (-125)
(ii) (-8) x (-2) x 3 x (-5)
(iii) (-6) x 2 x (-8) x 5
(iv) 15 x (-25) x (-4) x (-10)
(v) 26 x (-48) + (-48) x (-36)
(vi) 724 x (-56) + (-724) x 44
(vii) (-47) x 102
(viii) (-39) x (-97)
(4) (i) (-4) x ___ = 44
(ii) 7 x ___ = -42
(iii) ____ x (-13) = 143
(iv) (-5) x ____ = 0
(5) A certain freezing process requires that room temperature be lowered from 32 degree Celsius at the rate of 5 degree Celsius every hour. What will be the room temperature 8 hours after the freezing process begins?
(6) In a class test containing 10 questions, 5 marks are awarded for every incorrect answer and 0 for questions not attempted.
(i) Rohit gets four correct and six incorrect answers. What is his score?
(ii) Seema gets 5 correct and 5 incorrect answers. What is her score?
(iii) Ritu attempted 7 questions and gets only 2 correct answers. What is her score?
(7) (i) Find a pair of integers whose product is -15 and whose difference is 8.
(ii) Find a pair of integers whose product is -36 and whose difference is 15.
Solution
_____ x _____
Sir, how it becomes -44 in fourth question first part because it is -4 .
By mistake
OK, Thanks for clearing this
Total Book Solution Here https://www.netexplanations.com/ml-aggarwal-solution/
please read my comment of 1.2 exercise.
thanks,sir
thanks but I can’t understand Q7
Simran please read the question..Can you understand it? If not comment us
I also can’t understand Q7
Why 2 numbers you have to find, read question properly
Sir l cannot understand mathematics please explain me.
In Where?
I don’t understand question 7
Number bolo
Sir please .
Thank you for this solution