4.NOS.A.1: Apply and extend place value understanding to multi-digit whole numbers within 1,000,000. a. Read and write multi-digit whole numbers using base-ten numerals, number names, and expanded form. b. Estimate quantities by reasoning about their location on a number line, their relationship to benchmark numbers, and rounding to any place. c. Compare two multi-digit numbers by reasoning about the values of the digits and the location of the numbers on a number line. Record the results of comparisons with the symbols >, =, and <.