| A | B |
| digits | 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9. |
| Place value | the value of the place a digit has in a number |
| Standard form | A number written in a way that shows only its digits |
| expanded form | a number written as the sum of the values of its digits |
| word form | a number written in words |
| model form | a number represented by shapes or symbols |
| period | a group of 3 digits in a number starting from the right |
| ordinal number | is used to show the order of people or objects |
| compare | find out which number is greater and which number is less |
| order | write numbers from greatest to least or from least to greatest |
| dollar sign | shows money amounts |
| decimal point | separates dollars and cents |