2nd Grade Math (Montana Content Standards)

Operations and Algebraic Thinking (OA)

• MT.2.OA.1 Add and subtract within 100 for one- and two-step problems, including Montana cultural contexts.
• MT.2.OA.2 Add and subtract within 20 flexibly using mental strategies.
• MT.2.OA.3 Decide whether a group of up to 20 objects is odd or even.
• MT.2.OA.4 Use addition to find the total in rectangular arrays.

Number and Operations in Base Ten (NBT)

• MT.2.NBT.1 Understand one hundred as ten tens and read three-digit numbers as hundreds, tens and ones.
• MT.2.NBT.2 Skip-count by 5s, 10s and 100s.
• MT.2.NBT.3 Count, read, write and represent numbers to 1,000.
• MT.2.NBT.4 Compare three-digit numbers using >, = and <.
• MT.2.NBT.5 Add and subtract within 100 flexibly using several strategies.
• MT.2.NBT.6 Add as many as four 2-digit numbers with a range of strategies.
• MT.2.NBT.7 Add and subtract within 1,000 using several strategies.
• MT.2.NBT.8 Add or subtract 10 or 100 to or from a number using place value.
• MT.2.NBT.9 Understand and connect different addition and subtraction strategies.

Measurement and Data (MD)

• MT.2.MD.1 Measure length by choosing and using suitable tools.
• MT.2.MD.2 Measure with two units to see how unit size relates to the number of units.
• MT.2.MD.3 Estimate lengths in common units.
• MT.2.MD.4 Measure the length difference between two objects in standard units.
• MT.2.MD.5 Solve length problems within 100 in the same units, including Montana cultural contexts.
• MT.2.MD.6 Use a number line to show whole-number lengths and sums or differences up to 100.
• MT.2.MD.7 Read and record time to 5 minutes, marking a.m. or p.m.
• MT.2.MD.8 Solve money problems with dollar bills and coins using the dollar and cent symbols.
• MT.2.MD.9 Make measurement data and show it in several ways, including Montana cultural contexts.
• MT.2.MD.10 Sort, show and talk about data in as many as four categories, including Montana cultural contexts.
• MT.2.MD.11 Solve addition and subtraction problems using given data.

Geometry (G)

• MT.2.G.1 Recognize and draw shapes with given attributes.
• MT.2.G.2 Divide a rectangle into equal square rows and columns and count the squares.
• MT.2.G.3 Split circles and rectangles into equal shares and name them halves, thirds and fourths.