1. Math Unit 1 Chapter 1 Vocabulary
Base Ten Numbers

2. Period- each group of three digits is separated by a comma
Period- each group of three digits is separated by a comma. Each period has ones, tens and hundreds.

3. Standard Form- Numbers in digit form
Standard Form- Numbers in digit form. (Digits are any number 0,1,2,3,4,5,6,7,8,9)

4. Word Form- numbers written in words
Word Form- numbers written in words. ( 273, 114 =Two hundred seventy three thousand, one hundred fourteen)

5. Expanded Form- A number written in values.
(235, 471=200,000+30,000+5, )

6. Estimate- tells you about how many or how much
Estimate- tells you about how many or how much. It is close to an exact number.

7. Round- to estimate a number. (78 rounds to 80)

8. Adding Whole Numbers

9. Subtracting Whole Numbers