Here are the matching definitions for the words you provided:
- order: C. to arrange from least to greatest value, and vice versa
- mixed number: A. a single value combining a whole number and a fractional part of a whole
- benchmark: D. a value that can be used to estimate and compare fractions
- compare: B. to explain or show the similarities or differences between items or ideas
So the final matches are:
- order: C
- mixed number: A
- benchmark: D
- compare: B