Question 1

Which of the following statements is true?

Accepted Answer

Natural numbers are 1, 2, 3, ... Whole numbers are 0, 1, 2, 3, ... Every natural number is contained in the set of whole numbers, so 'All natural numbers are whole numbers' is true.

Question 2

Which of the following is a negative integer?

Accepted Answer

A negative integer is less than zero and is written with a minus sign. Among the given options, -5 is a negative integer while 5, 0, and 7 are either positive or neither.

Question 3

What is the successor of -17?

Accepted Answer

The successor of any integer is obtained by adding 1 to it. So, (-17) + 1 = -16.

Question 4

What is the predecessor of -20?

Accepted Answer

The predecessor of any integer is obtained by subtracting 1 from it. So, (-20) - 1 = -21.

Question 5

What is the absolute value of -15?

Accepted Answer

The absolute value of an integer is its numerical value regardless of its sign. Therefore, |-15| = 15.

Integers — NCERT Class 6 Mathematics Important Questions & Revision Notes