Question

How do you evaluate `abs(-10)`?

Answer 1

`10`

Explanation:

The `color(blue)"absolute value"` is always `color(red)"positive".`

This is because it is a measure of how far a value is from zero.

`"That is " |-4|=|4|=4` since both - 4 and 4 are 4 units from zero.

`rArr|-10|=10`

Answer 2

`10`

Explanation:

So absolute value means a number's distance from 0.
`-10` is `10` units from `0`, so the answer is `10`.

An easier way to do this is to just get rid of the negative sign.

Here are some examples:

`|31| = 31` (because 31's distance from 0 is 31)

`|-31| = 31` (because -31's distance from 0 is 31)

You can do some practice by using random number generators and finding their absolute values.

Answer 3

+10

Explanation:

The format of `|-10|` is a way of mathematically stating the 'size' of a count. It does not matter if the number inside the | | is positive or negative. The size of the count is the same.

Example `" "|-5|=|+5| = 5`

A name for the 'count size' is Cardinality but at this level you will NOT be using this name.

The name for the `color(red)(|" some number" |)` is absolute value which you will be using.

`color(brown)(|-10| =|+10|=10`