CCSS.Math.Content.3.NBT.A

Use place value understanding to round whole numbers to the nearest 10 or 100.

Fluently add and subtract within 1000 using strategies and algorithms based on place value, properties of operations, and/or the relationship between addition and subtraction.

Multiply one-digit whole numbers by multiples of 10 in the range 10–90 (e.g., 9 × 80, 5 × 60) using strategies based on place value and properties of operations.

Use place value understanding to round multi-digit whole numbers to any place.

Understand place value.

Understand that the three digits of a three-digit number represent amounts of hundreds, tens, and ones; e.g., 706 equals 7 hundreds, 0 tens, and 6 ones. Understand the following as special cases:

Generalize place value understanding for multi-digit whole numbers.

Recognize that in a multi-digit whole number, a digit in one place represents ten times what it represents in the place to its right.

Use place value understanding and properties of operations to perform multi-digit arithmetic.

Use place value understanding and properties of operations to perform multi-digit arithmetic.

Apply place-value understanding and properties of operations to perform multi-digit arithmetic.

Use place-value understanding and properties of operations to perform multi-digit arithmetic.