What is distance between ( -9 ) and ( -21 )
Answer and explanation
Correct answer: 12
On a number line, the distance between two numbers is the absolute value of their difference. Thus, \(\lvert -9-(-21)\rvert=\lvert 12\rvert=12\). Therefore, the correct answer is 12. Choosing 11 may result from incorrectly counting the integers between the numbers rather than finding their distance. Exam tip: always take the absolute value of the difference when finding distance.
Frequently asked questions
What is the correct answer to this question?
12
Why is this the correct answer?
On a number line, the distance between two numbers is the absolute value of their difference. Thus, \(\lvert -9-(-21)\rvert=\lvert 12\rvert=12\). Therefore, the correct answer is 12. Choosing 11 may result from incorrectly counting the integers between the numbers rather than finding their distance. Exam tip: always take the absolute value of the difference when finding distance.
Which subject and chapter does this question cover?
This is a Class 9 Mathematics question. Chapter: Number Systems. Topic: Number line.
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