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Is it true or false that to compare numbers you need to write them in a place value chart and compare the digits from left to right?
it is true
Why do you compare numbers beginning from the left after you line them up by place value?
because in america we read left to right
How do you compare and order rational numbers?
To order fractions and decimals, you can either write them all in the same form and then compare them, or place them on a number line. Recall that numbers increase in value as you move from left to right along a number line.
Is 8.092 greater than 8.9?
8.092 is lesser than 8.9 because 8.092-8.9=-0.808 < 0. You don't have to do subtraction to figure it out. You need to first compare the numbers in the ones place (here it's 8 and 8). Then, because they are equal, compare the numbers in the tenths place (here these are 0 and 9). Since in the tenths place 0 < 9, then 8.09 < 8.9.
Why you start ordering numbers by lining up their ones digits?
technically you don't line up the ones. you line up the decimals. you do this because it is necessary to compare place value to place value in order to order.
