M7 INTEGERS

In a quiz, positive marks are given for correct answers and

negative marks are given for incorrect answers.

If Jack’s scores in five successive rounds were

25, − 5, − 10, 15 and 10,

what was his total at the end?

• 10
• -5
• 15
• 20

At Srinagar temperature was − 5°C on Monday and then it dropped by 2°C on Tuesday.

What was the temperature of Srinagar on Tuesday?

___°C

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?

____ m

Mohan deposits Rs 2,000 in his bank account and withdraws Rs 1,642 from it, the next day.

If withdrawal of amount from the account is represented by a negative integer, then how will you represent the amount deposited?

Rita goes 20 km towards east from a point A to the point B.

From B, she moves 30 km towards west along the same road.

If the distance towards east is represented by a positive integer then,

by which integer will you represent her final position from A?

Use the sign of >, < or = in the box to make the statements true.

Write down a pair of integers whose:

sum is − 7

• -5, -2
• 0, -7
• -3, -4
• -1, -6

Write down a pair of integers whose:

difference is − 10

• (10, 0)
• (0, 10)
• (5, -5)
• (-10, 0)

Write a pair of negative integers whose difference gives 8.

• -2, -10
• -1, -9
• -5, -13
• -3, -11

Write a negative integer and a positive integer whose sum is − 5.

• -6 and 1
• -4 and -1
• -5 and 0
• -3 and 2