| A | B |
|---|
| sum | the answer to an addition problem |
| estimate | to find about how many or how much |
| front end estimation | estimating a sum or difference by using the front digit of the number and adding zeros for the other digits |
| expression | the part of a number sentence that combine number and operations signs, but doesn't have an equal sign |
| not equal to | not the same amount |
| subtract | to find the difference between two quantities |
| dollar sign | $ |
| decimal point | a symbol used to separate dollars fom cents in money and to separate tne ones place from the tenths place in decimals |
| equivalent | two or more sets that name the same amount |
| rounding | a method of estimating by substituting a number that is close |
| regrouping | exchanging amounts of equal value to rename a number |
