Question
Find the value of $– 8 – (–10)$ using number line
✓
Answer
Clearly,
$– 8 – (– 10) = – 8 + 10$ as additive inverse of $–10$ is $10.$
On the number line, from $– 8$ we will move $10$ steps towards right,
And we reach at $2.$ Thus, $–8 – (–10) = 2$
Hence, to subtract an integer from another integer it is equivalent to adding the additive inverse of the integer that is being subtracted, to the other integer.
$– 8 – (– 10) = – 8 + 10$ as additive inverse of $–10$ is $10.$
On the number line, from $– 8$ we will move $10$ steps towards right,
And we reach at $2.$ Thus, $–8 – (–10) = 2$
Hence, to subtract an integer from another integer it is equivalent to adding the additive inverse of the integer that is being subtracted, to the other integer.
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$ii.\ $How many students in the class are in the range of maximum height of the class?
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$iv.\ $How many students are in the range of shortest height of the class?
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$b.\ $Maximum height $($in $cm)$ of a student in the class is $17.$
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$d.\ $Minimum height $($in $cm)$ of a student is the class is in the range of $140-144\ cm.$
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