1st Grade Math (Kentucky Academic Standards)

Operations and Algebraic Thinking (OA)

• KY.1.OA.1 Solve addition and subtraction word problems within 20 with the unknown in any position.
• KY.1.OA.2 Solve word problems that add three numbers with a total up to 20.
• KY.1.OA.3 Use properties of operations as strategies to add and subtract.
• KY.1.OA.4 Understand subtraction as finding an unknown addend.
• KY.1.OA.5 Link counting to addition and subtraction.
• KY.1.OA.6 Add and subtract within 20, fluently within 10.
  • a. Add and subtract fluently within 10.
  • b. Add and subtract within 20 using efficient strategies.
• KY.1.OA.7 Understand the equal sign and decide if addition and subtraction equations are true.
• KY.1.OA.8 Find the unknown number in an addition or subtraction equation with three numbers.

Number and Operations in Base Ten (NBT)

• KY.1.NBT.1 Count to and from 120 and read, write and show numbers.
  • a. Count forward and back to 120 from any number.
  • b. Read and write numerals to 120 and use them for groups of objects.
• KY.1.NBT.2 Understand two-digit numbers as tens and ones.
  • a. Know ten ones make one ten.
  • b. Know 11 to 19 are one ten and some ones.
  • c. Know 10, 20 … 90 are tens with no ones.
• KY.1.NBT.3 Compare two-digit numbers by tens and ones and record with >, = and <.
• KY.1.NBT.4 Add within 100, including a two-digit and a one-digit number or a multiple of ten.
  • a. Add within 100 using models, place value and properties.
  • b. Link addition strategies to written methods and explain the reasoning.
• KY.1.NBT.5 Find 10 more or 10 less than a two-digit number mentally and explain how.
• KY.1.NBT.6 Subtract multiples of ten in the range 10 to 90.
  • a. Subtract multiples of ten using models and place-value strategies.
  • b. Link subtraction strategies to written methods and explain the reasoning.

Measurement and Data (MD)

• KY.1.MD.1 Order three objects by length and compare two using a third object.
• KY.1.MD.2 Give a length as a whole number of same-size units laid end to end.
• KY.1.MD.3 Work with time and money.
  • a. Tell and write time to the hour and half hour.
  • b. Name pennies, nickels, dimes and quarters and their values.
• KY.1.MD.4 Answer questions about categorical data by collecting and showing it.
  • a. Ask a question that data can answer.
  • b. Choose a way to collect data from classmates.
  • c. Organize data in a table or chart with up to three categories.
  • d. Read the table to find totals, counts in each category and differences.

Geometry (G)

• KY.1.G.1 Tell defining from non-defining features and build and draw shapes with given features.
• KY.1.G.2 Put 2-D and 3-D shapes together to make composite shapes and new shapes.
  • a. Combine flat shapes into rectangles, triangles and other figures.
  • b. Combine cubes, prisms, cones and cylinders into composite shapes.
• KY.1.G.3 Split circles and rectangles into halves and fourths and use those words.