| A | B |
|---|
| compatible numbers | numbers that are easy to compute mentally |
| rational numbers | a number that can be expressed as a fraction of two integers |
| round | to drop or zero-out digits in a number and change the digit in the specified place |
| improper fractions | a fraction that has a numerator that is larger than its denominator |
| sum | the answer to an addition problem |
| difference | the answer to a subtraction problem |
| product | the answer to a multiplication problem |
| quotient | the answer to a division problem |
