Question

A State whether the following statements are correct or incorrect. 0.5X6=3
Correct those which are wrong:
(i) When two positive integers are added we get a positive integer.
(ii) When two negative integers are added we get a positive integer.
(iii) When a positive integer and a negative integer are added, we always get a negative
integer.
(iv) Additive inverse of an integer 8 is (– 8) and additive inverse of (– 8) is 8.
(v) For subtraction, we add the additive inverse of the integer that is being subtracted,
to the other integer.
(vi) (–10) + 3 = 10 – 3
B Solve the given problem:
1.A plane is flying at the height of 5000 m above the sea level. At a particular point, it is exactly above a submarine floating 1200 m below the sea level. What is the vertical distance between them? (1)
2.Write a pair of integers whose difference gives 1x4=4
(a) a negative integer.
(b) zero.
(c) an integer smaller than both the integers.
(d) an integer greater than only one of the integers.
3. In a class test containing 15 questions, 4 marks are given for every correct answer and (2)
(–2) marks are given for every incorrect answer. (i) Gurpreet attempts all questions but only 9 o her answers are correct. What is her total score? (ii) One of her friends gets only 5 answers correct. What will be her score?
4. A cement company earns a profit of Rs 10 per bag of white cement sold and a loss of Rs 8 (2)
per bag (of grey cement sold.(a) The company sells 3,000 bags of white cement and 5,000 bags of grey (cement in a month. What is its profit or loss?​

Answer 1

Answer:

all'to are corrugated plot