You add it. Or you can use decimals if i have $8.50 and i want to take out $5.00 i would use decimals and same if your adding subtracting etc. If you don't know how to multiply decimals just ignore them then add them i the end, how you know where it goes? You count how many numbers are behind! Same for division except you divide.
your dumb if you don't know how to round decimals on a number line
I dont know
That depends how you want to round it - mainly, how many decimals you want to keep.
I don't know ok
There are several rules for decimals, depending on what you want to do.
You add it. Or you can use decimals if i have $8.50 and i want to take out $5.00 i would use decimals and same if your adding subtracting etc. If you don't know how to multiply decimals just ignore them then add them i the end, how you know where it goes? You count how many numbers are behind! Same for division except you divide.
your dumb if you don't know how to round decimals on a number line
I dont know
They need to know about decimals, fractions, and percents because they need to know the exact measures of the things they are designing.
That depends how you want to round it - mainly, how many decimals you want to keep.
I don't know ok
to know where to step and how long
when they want to.
8.9% or if you want it in decimals then 8.9 / 100 = .089.
To change decimals to fractions, you must move the decimal place over to make it a whole number. However many places you move it, that is how many zeroes that go on the denominator with the 1. For example, 0.38 would be 38/100 as a fraction.
How accurate do you want it to be? - In case you don't know it, you can't express pi exactly as a fraction, or as a square root. You can approximate it as much as you want with decimals for example, that is, you can make the error as small as you want - but never zero.