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Common Core

Skills available for Common Core second-grade math standards

Click on the name of a skill to practice that skill.

    Print Standards

Operations and Algebraic Thinking.

Represent and solve problems involving addition and subtraction.

Add and subtract within 20.
  • CC.2.OA.2 Add and subtract within 20. Fluently add and subtract within 20 using mental strategies. By end of Grade 2, know from memory all sums of two one-digit numbers.

Work with equal groups of objects to gain foundations for multiplication.

Number and Operations in Base Ten

Understand place value.

Use place value understanding and properties of operations to add and subtract.

Measurement and Data

Measure and estimate lengths in standard units.

Relate addition and subtraction to length.

Work with time and money.

Represent and interpret data.
  • CC.2.MD.9 Generate measurement data by measuring lengths of several objects to the nearest whole unit, or by making repeated measurements of the same object. Show the measurements by making a line plot, where the horizontal scale is marked off in whole-number units.
  •    » Q.09: Introduction to line plots
  • CC.2.MD.10 Draw a picture graph and a bar graph (with single-unit scale) to represent a data set with up to four categories. Solve simple put-together, take-apart, and compare problems using information presented in a bar graph.
  •    » Q.06: Understanding pictographs
       » Q.07: Understanding bar graphs
       » Q.10: Review of Pictographs, Bar graphs and Line plots
       » Q.02: Pictographs - Assessment 1


Reason with shapes and their attributes.

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