3rd Grade Math (Mississippi CCR Standards)

Operations and Algebraic Thinking (OA)

• 3.OA.1 See a product as the total in a number of equal groups.
• 3.OA.2 See a whole-number quotient as equal sharing or equal grouping.
• 3.OA.3 Solve multiplication and division word problems within 100.
• 3.OA.4 Find unknown numbers in multiplication and division equations with factors 0–10.
• 3.OA.5 Use properties of operations to multiply and divide.
• 3.OA.6 See division as finding an unknown factor.
• 3.OA.7 Multiply and divide fluently within 100.
• 3.OA.8 Solve two-step word problems and check answers for reasonableness.
• 3.OA.9 Find arithmetic patterns and explain them with properties of operations.

Number and Operations in Base Ten (NBT)

• 3.NBT.1 Round whole numbers to the nearest 10 or 100.
• 3.NBT.2 Add and subtract fluently within 1000.
• 3.NBT.3 Multiply one-digit numbers by multiples of 10.

Number and Operations—Fractions (NF)

• 3.NF.1 Understand unit fractions and fractions made from them.
• 3.NF.2 Show fractions on a number line.
  • a. Split 0 to 1 into b equal parts to place 1/b.
  • b. Mark off a lengths of 1/b to place a/b.
• 3.NF.3 Explain equivalent fractions and compare fractions.
  • a. Know equal fractions are the same size or point, comparing only fractions of the same whole.
  • b. Find simple equivalent fractions and explain them with visual models.
  • c. Write whole numbers as fractions and recognize fractions equal to whole numbers.
  • d. Compare fractions with the same numerator or denominator and justify the comparison.

Measurement and Data (MD)

• 3.MD.1 Tell time to the minute and solve problems with time intervals.
• 3.MD.2 Measure liquid volume and mass in grams, kilograms, and liters.
• 3.MD.3 Draw scaled picture and bar graphs and solve comparison problems.
• 3.MD.4 Measure lengths to the half and quarter inch and make line plots.
• 3.MD.5 Understand area and measuring it with unit squares.
  • a. A unit square covers one square unit of area.
  • b. A figure covered by n unit squares has an area of n square units.
• 3.MD.6 Measure area by counting unit squares.
• 3.MD.7 Link area to multiplication and addition.
  • a. Tile a rectangle to show its area equals the product of its sides.
  • b. Multiply side lengths to find rectangle areas in real problems.
  • c. Use tiling to show a × (b + c) equals a × b + a × c.
  • d. Split rectilinear figures into rectangles and add their areas.
• 3.MD.8 Solve perimeter problems and design rectangles with the same perimeter or area.

Geometry (G)

• 3.G.1 Understand how categories of shapes relate, such as rhombuses and quadrilaterals.
• 3.G.2 Split shapes into parts of equal area and name each part as a unit fraction.