Number and Operations in Base Ten
Represent and solve problems involving multiplication and division.
Understand that the four digits of a four-digit number represent amounts of thousands, hundreds, tens, and ones (e.g., 7,706 can be portrayed in a variety of ways according to place value strategies). Understand the following as special cases:
1,000 can be thought of as a group of ten hundreds---called a thousand.
The numbers 1,000, 2,000, 3,000, 4,000, 5,000, 6,000, 7,000, 8,000, 9,000 refer to one, two, three, four, five, six, seven, eight, or nine thousands.