Terminology
New or Recently Introduced Terms

 
 Base ten numerals (e.g., a thousand is 10 hundreds, a hundred is 10 tens, starting in Grade 3 a one is 10 tenths, etc.)

 Expanded form (e.g., 500 + 70 + 6)

 Hundreds place (e.g., the 5 in 576 is in the hundreds place)

 One thousand (1,000)

 Place value or number disk  

Standard form (e.g., 576) 

Unit form (e.g., 5 hundreds 7 tens 6 ones) 

Word form (e.g., five hundred seventy-six)