Summary: Review

Key Concepts

  • We can use the number line to order numbers.
    • [latex]a
    • [latex]a>b[/latex] if [latex]a[/latex] is to the right of [latex]b[/latex] on the number line.
  • Ordering decimals.
    • Check to see if both numbers have the same number of decimal places. If not, write zeros at the end of the one with fewer digits to make them match.
    • Compare the numbers to the right of the decimal point as if they were whole numbers.
    • Order the numbers using the appropriate inequality sign.
  • To compare a decimal to a fraction, we will first convert the fraction to a decimal and then compare the decimals.
  • The order of operations applies to expressions involving fractions and decimals.