South Carolina 2nd grade math standards

Sort a collection of 20 or fewer objects into two groups to determine if the number of objects is even or odd.

Solve one-step add-to, take-from, part-part-whole, and additive comparison real-world situations through 99 with the unknown in any position.

Add and subtract number combinations flexibly and accurately within 20.

Describe, extend, and create a growing shape pattern with up to three terms within a sequence.

Determine the unknown number in addition and subtraction equations within 20, with the unknown in any position.

Determine and explain if an equation (within 20) is true using a variety of equation formats.

Apply the Associative Property of Addition to find the sum (through 20) of three addends and explain that the value can be found using various grouping strategies.

Find the total number of objects arranged in equal groups or in a rectangular array and write an addition equation to express the total as a sum (up to 25) of equal addends.

Create, describe, and extend an appropriate one-step rule for number patterns using addition and subtraction within 100.

For any number from 0 to 99, find the number that makes 100 when added to the given number.

Use a strategy to accurately find sums and differences of two-digit numbers within 100 and justify the sum or difference.

Apply place value reasoning to identify the number that is 10 more, 10 less, 100 more, and 100 less than a given three-digit number through 999.

When given a two-digit number, identify which multiple of 10 the number is closest to.

Compare representations of whole numbers up to 999 and write a comparison statement using words and symbols.

Compose and decompose whole numbers from 1 through 999 in more than one way using hundreds, tens, and ones. Explain and demonstrate each composition or decomposition with the use of concrete models, drawings, and equations.

Represent and explain that whole numbers 1 through 999 are organized into groups of hundreds, tens, and ones, and a digit has a different value depending on its placement.

Count forward and backward by ones, tens, and hundreds from any number within 999 and identify patterns in the sequence.

Read, write, and represent numbers up to 999 using concrete models, drawings, standard form, base ten language, and equations in expanded form.

Select and use appropriate tools to estimate and measure length of an object or distance to the nearest customary unit.

Use analog and digital clocks to tell and record time in five-minute intervals, identifying AM and PM.

Create a survey question and collect data with up to four categories. Create tally charts, picture graphs, dot plots, and bar graphs with a single-unit scale to read the graph, answer questions, and draw conclusions.

Determine the value of mixed sets of coins or bills in mathematical and real-world situations and record the value using a ¢ or symbol.

Classify two-dimensional shapes as triangles or quadrilaterals and justify each classification.

Explain that when partitioning a square, rectangle, or circle into two or four equal parts, the parts become smaller as the number of parts increases.

Classify shapes as polygons or non-polygons and defend that determination based on their attributes.

Identify and describe a given shape in everyday situations to include two-dimensional shapes and three-dimensional shapes.

Partition in multiple ways squares, rectangles, and circles into two or four equal sized parts, and describe the parts using the words halves, fourths, a half of, and a fourth of (not quarters).