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Which is greater on number line ( -21 ) or ( -20.5 )

Answer and explanation

Correct answer: \(-20.5\)

For negative numbers, the number farther to the right on the number line is greater. \(-20.5\) lies to the right of \(-21\) because it is closer to zero. Therefore, \(-20.5\) is greater. Although \(-20.75\) is also greater than \(-21\), it is not one of the two numbers being compared. Exam tip: among negative numbers, the number with the greater negative value is smaller.

Related tags

Number LineNegative NumbersDecimal ComparisonNumber SystemsGrade 9MathematicsClass 9 Mcq

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