[ PDF File - No Prep ] Understand place value - Understand that the three digits of a three-digit number represent amounts of hundreds, tens, and ones - 100 can be thought of as a bundle of ten tens - called a “hundred.” - The numbers 100, 200, 300, 400, 500, 600, 700, 800, 900 refer to one, two, three, four, five, six, seven, eight, or nine hundreds (and 0 tens and 0 ones). - Count within 1000; skip-count by 5s, 10s, and 100s. - Read and write numbers to 1000 using base-ten numerals, number nam