Now that we have placed integers on the number line, let's examine the values between the integers. Remember that there are numbers between any two other numbers on a number line. One way to represent the numbers between whole numbers is by using a decimal.
Consider the following situation:
Mike is looking through the pockets of his jeans before putting them in the washing machine. He finds 2 one dollar bills, a quarter, and a nickel.
How much money did he find?
Interactive popup. Assistance may be required.Two dollars and thirty cents
How do you write this amount as a decimal number?
Interactive popup. Assistance may be required.$2.30
Between what two whole numbers would you find $2.30?
Interactive popup. Assistance may be required.$2.30 is between $2 and $3
Which whole number is $2.30 closest to?
Interactive popup. Assistance may be required.It is closer to $2
In relationship to $2 and $3, where on a number line would $2.30 be located?
Interactive popup. Assistance may be required.The number $2.30 would be located between $2 and $3 on the number line, approximately halfway between $2 and $2.50.
Here's another example:
Where would you place 2.4 on a number line?
Interactive popup. Assistance may be required.The number 2.4 would be located between 2 and 3 on the number line, a little to the left of 2.5.
Why?
Interactive popup. Assistance may be required.2.4 should be placed here because 2.4 is closer to 2 than it is to 3.
