4th Grade Math (Kentucky Academic Standards)

Operations and Algebraic Thinking (OA)

• KY.4.OA.1 Read multiplication equations as comparisons and write comparisons as equations.
• KY.4.OA.2 Solve comparison problems by multiplying or dividing and tell them apart from additive ones.
• KY.4.OA.3 Solve multi-step problems using order of operations, remainders and checks for reasonableness.
  • a. Use the usual order of operations when there are no parentheses.
  • b. Solve word problems and check answers by estimating and mental math.
• KY.4.OA.4 Work with factors, multiples, primes and composites for numbers 1 to 100.
  • a. List all the factor pairs of a whole number.
  • b. Know a whole number is a multiple of each of its factors.
  • c. Decide whether a number is a multiple of a given one-digit number.
  • d. Decide whether a number is prime or composite.
• KY.4.OA.5 Make patterns that follow a rule and notice features not stated in the rule.

Number and Operations in Base Ten (NBT)

• KY.4.NBT.1 Know that each place is worth ten times the place to its right.
• KY.4.NBT.2 Read, write and compare multi-digit whole numbers using place value and symbols.
  • a. Write numbers as numerals, number names or expanded form.
  • b. Compare multi-digit numbers digit by digit using symbols.
• KY.4.NBT.3 Round multi-digit whole numbers to any place.
• KY.4.NBT.4 Add and subtract multi-digit whole numbers fluently using algorithms.
• KY.4.NBT.5 Multiply up to four-digit numbers by one-digit numbers and two two-digit numbers.
• KY.4.NBT.6 Divide up to four-digit numbers by one-digit numbers, finding quotients and remainders.

Number and Operations—Fractions (NF)

• KY.4.NF.1 Make and recognize equivalent fractions with visual models.
  • a. Use visual models to make and spot equivalent fractions.
  • b. Explain why multiplying top and bottom by the same number keeps the value.
• KY.4.NF.2 Compare fractions with unlike parts using symbols, knowing they must refer to the same whole.
• KY.4.NF.3 Add, subtract and break apart fractions with like denominators.
  • a. Add and subtract fractions as joining and separating parts of a whole.
  • b. Break a fraction into a sum of unit fractions and record it as an equation.
  • c. Add and subtract mixed numbers with like denominators.
  • d. Solve word problems adding and subtracting fractions with like denominators.
• KY.4.NF.4 Multiply a fraction by a whole number, seeing fractions as multiples of unit fractions.
  • a. Understand a fraction as a multiple of its unit fraction.
  • b. Multiply a fraction by a whole number using unit-fraction multiples.
  • c. Solve word problems multiplying a fraction by a whole number.
• KY.4.NF.5 Change tenths to hundredths and add fractions with denominators 10 and 100.
  • a. Write a fraction in tenths as an equivalent fraction in hundredths.
  • b. Add two fractions with denominators 10 and 100.
• KY.4.NF.6 Write fractions with denominators 10 or 100 as decimals.
• KY.4.NF.7 Compare decimals to hundredths and record the result with symbols.
  • a. Compare decimals to hundredths by reasoning about their size.
  • b. Compare decimals only when they refer to the same whole.
  • c. Record comparisons with symbols and justify them.

Measurement and Data (MD)

• KY.4.MD.1 Know the relative sizes of units in one measurement system and convert between them.
  • a. Understand how units in one system relate to each other.
  • b. Express a measurement in a larger unit in terms of a smaller unit.
  • c. Record measurement equivalents in a two-column table.
• KY.4.MD.2 Solve word problems with the four operations about distance, time, volume, mass and money.
  • a. Solve measurement problems with whole numbers, fractions or decimals.
  • b. Convert larger units to smaller units within one system.
  • c. Show measurements on a number line with a measurement scale.
• KY.4.MD.3 Use area and perimeter formulas for rectangles in real and mathematical problems.
• KY.4.MD.4 Use dot plots to analyze numerical data for a statistical question.
  • a. Recognize a statistical question about numerical data.
  • b. Make dot plots of measurements in halves, fourths and eighths.
  • c. Solve fraction addition and subtraction problems using dot plots.
• KY.4.MD.5 Recognize an angle as a shape made where two rays share an endpoint.
• KY.4.MD.6 Measure angles in whole degrees with a protractor and sketch given angles.
• KY.4.MD.7 Know angle measures add when angles are joined and find unknown angles.

Geometry (G)

• KY.4.G.1 Draw and identify points, lines, rays, angles and parallel and perpendicular lines.
• KY.4.G.2 Sort 2-D shapes by their lines or angles and recognize right triangles.
• KY.4.G.3 Find lines of symmetry and line-symmetric figures.
  • a. Recognize lines of symmetry in 2-D figures.
  • b. Identify line-symmetric figures and draw their lines of symmetry.