3rd Grade Standards Practice If logged in, you will see your mastery percentage next to each skill. You can create a free child account here. Number and Operations in Base Ten Use place value understanding and properties of operations to perform multi-digit arithmetic Round Numbers to the Nearest 10 or 100 (T3-NBT.1) Add and Subtract within 1000 (T3-NBT.2) Multiply one-digit whole numbers by multiples of 10 (T3-NBT.3) Number & Operations—Fractions Develop understanding of fractions as numbers Understanding a Fraction as a Quantity Formed by 1 Part (T3-NF.1) Understanding a Fraction as a Quantity Formed by a Parts of Size 1/b (T3-NF.2) Measurement and Data Solve problems involving measurement and estimation of intervals of time Tell and Write Time to the Nearest Minute and Measure Time Intervals in Minutes (T3-MD.1) Geometric measurement: understand concepts of area and relate area to multiplication and to addition Relate Area to the Operations of Multiplication and Addition (T3-MD.2) Geometry Partition shapes into parts with equal areas and express the area of each part as a unit fraction of the whole Partition Squares into Parts with Equal Areas (T3-G.1) Partition Circles into Parts with Equal Areas (T3-G.2)
