1st Grade Math (Mississippi CCR Standards)

Operations and Algebraic Thinking (OA)

• 1.OA.1 Solve addition and subtraction word problems within 20 with unknowns in any position.
• 1.OA.2 Solve word problems that add three whole numbers with a total of 20 or less.
• 1.OA.3 Use properties of operations as strategies to add and subtract.
• 1.OA.4 See subtraction as finding a missing addend.
• 1.OA.5 Relate counting to addition and subtraction.
• 1.OA.6 Add and subtract within 20 with strategies, fluently within 10.
• 1.OA.7 Understand the equal sign and decide whether equations are true or false.
• 1.OA.8 Find the missing number in an addition or subtraction equation with three numbers.

Number and Operations in Base Ten (NBT)

• 1.NBT.1 Count to 120 from any number and read and write numerals.
• 1.NBT.2 Understand two-digit numbers as tens and ones.
  • a. Know a ten is a bundle of ten ones.
  • b. Know 11–19 are a ten and some ones.
  • c. Know multiples of ten are a number of tens.
• 1.NBT.3 Compare two-digit numbers by tens and ones with >, =, and <.
• 1.NBT.4 Add within 100 using place value and explain the reasoning.
• 1.NBT.5 Find 10 more or 10 less than a two-digit number mentally.
• 1.NBT.6 Subtract multiples of ten in the range 10–90 using place-value strategies.

Measurement and Data (MD)

• 1.MD.1 Order three objects by length and compare two lengths using a third object.
• 1.MD.2 Measure length by laying equal units end to end with no gaps.
• 1.MD.3a Tell and write time to the hour and half hour.
• 1.MD.3b Name the days of the week and know how many days are in a week.
• 1.MD.3c Name the months, how many are in a year, and the weeks in a month.
• 1.MD.4 Organize and interpret data in up to three categories.
• 1.MD.5a Identify U.S. coins and bills and use cent and dollar notation.
• 1.MD.5b Know the relative values of U.S. coins.
• 1.MD.5c Count collections of one kind of coin up to one dollar.
• 1.MD.5d Show the value of a larger coin with smaller coins.

Geometry (G)

• 1.G.1 Tell defining from non-defining attributes and build and draw shapes with given attributes.
• 1.G.2 Put flat or solid shapes together to make composite shapes.
• 1.G.3 Split circles and rectangles into halves and fourths (quarters).