2.NR.1: Represent multi-digit numbers in a variety of ways to build place value understanding.

Represent multi-digit numbers in a variety of ways to build place value understanding.

2.NR.1.1Read, write, and represent numbers up to 999 using concrete models, drawings, standard form, base ten language, and equations in expanded form.2.NR.1.2Represent and explain that whole numbers 1 through 999 are organized into groups of hundreds, tens, and ones, and a digit has a different value depending on its placement.2.NR.1.3Compose and decompose whole numbers from 1 through 999 in more than one way using hundreds, tens, and ones. Explain and demonstrate each composition or decomposition with the use of concrete models, drawings, and equations.2.NR.1.4Apply place value reasoning to identify the number that is 10 more, 10 less, 100 more, and 100 less than a given three-digit number through 999.

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