Number and Operations in Base Ten

Use place value understanding and properties of operations to perform multi-digit arithmetic.
3.NBT.1 Use place value understanding to round whole numbers to the nearest 10 or 100.


3.NBT.1 Task 1: Cafeteria Lunch Orders
3.NBT.1 Task 2: Comparing Heights
3.NBT.1 Task 3: All About Rounding

3.NBT.2 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.
3.NBT.2 Task 1: Compatible Numbers
3.NBT.2 Task 2: Toys for Us
3.NBT.2 Task 3: From 100 to 0

3.NBT.3 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.
3.NBT.3 Task 1: What's the Best Deal?
3.NBT.3 Task 2: Helping Hugh
3.NBT.3 Task 3: Earn That Bike