1st Grade Math (Wisconsin Standards)

Operations and Algebraic Thinking (1.OA)

• M.1.OA.A.1 Solve addition and subtraction word problems within 20 with the unknown in any position.
• M.1.OA.A.2 Solve word problems adding three whole numbers with a sum up to 20.
• M.1.OA.B.3 Use properties of operations, such as order and grouping, to add and subtract.
• M.1.OA.B.4 Understand subtraction as finding an unknown addend.
• M.1.OA.C.5 Explain addition and subtraction using counting and subitizing.
  • a. Relate counting on and back to adding and subtracting.
  • b. Recognize totals quickly in five- and ten-based arrangements.
• M.1.OA.C.6 Add and subtract within 20 flexibly and efficiently with several strategies.
  • a. Add and subtract within 10 flexibly using mental images.
  • b. Add and subtract within 20 with models and strategies.
• M.1.OA.D.7 Understand the equal sign as "same value" and decide whether equations are true.

Number and Operations in Base Ten (1.NBT)

• M.1.NBT.A.1 Count to 120 from any number and read and write numerals to 120.
• M.1.NBT.B.2 Understand two-digit numbers as tens and ones.
  • a. Ten is a bundle of ten ones.
  • b. 11–19 are a ten and some ones.
  • c. Multiples of ten are tens and zero ones.
• M.1.NBT.B.3 Compare two-digit numbers using tens and ones, with words and symbols.
• M.1.NBT.C.4 Add within 100 using place value, composing tens when needed, and explain.
• M.1.NBT.C.5 Find ten more or ten less than a two-digit number mentally, without counting, and explain.
• M.1.NBT.C.6 Subtract multiples of 10 from multiples of 10 using models and place value.

Measurement and Data (1.MD)

• M.1.MD.A.1 Order three objects by length and compare two lengths indirectly using a third.
• M.1.MD.A.2 Measure length by laying copies of a shorter unit end to end with no gaps.
• M.1.MD.B.3 Read and write clock times to the hour and half hour on analog and digital clocks.
• M.1.MD.C.4 Sort and read data in up to three categories and answer how-many and comparison questions.

Geometry (1.G)

• M.1.G.A.1 Tell defining from non-defining attributes and build shapes with given attributes.
• M.1.G.A.2 Compose 2D and 3D shapes into composite shapes and make new shapes from them.
• M.1.G.A.3 Split circles and rectangles into halves and fourths and describe the shares.