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Colorado Common Core Standards for Second Grade Math

CO.2.1. Number Sense, Properties, and Operations

2.1.1. The whole number system describes place value relationships through 1,000 and forms the foundation for efficient algorithms. Students can:

2.1.1.a. Use place value to read, write, count, compare, and represent numbers. (CCSS: 2.NBT)
2.1.1.a.i. Represent the digits of a three-digit number as hundreds, tens, and ones. (CCSS: 2.NBT.1)
2.1.1.a.ii. Count within 1000. (CCSS: 2.NBT.2)
2.1.1.a.iii. Skip-count by 5s, 10s, and 100s. (CCSS: 2.NBT.2)
2.1.1.a.iv. Read and write numbers to 1000 using base-ten numerals, number names, and expanded form. (CCSS: 2.NBT.3)
2.1.1.a.v. Compare two three-digit numbers based on meanings of the hundreds, tens, and ones digits, using >, =, and < symbols to record the results of comparisons. (CCSS: 2.NBT.4)
2.1.1.b. Use place value understanding and properties of operations to add and subtract. (CCSS: 2.NBT)
2.1.1.b.i. Fluently add and subtract within 100 using strategies based on place value, properties of operations, and/or the relationship between addition and subtraction. (CCSS: 2.NBT.5)
2.1.1.b.ii. Add up to four two-digit numbers using strategies based on place value and properties of operations. (CCSS: 2.NBT.6)
2.1.1.b.iii. Add and subtract within 1000, using concrete models or drawings and strategies based on place value, properties of operations, and/or the relationship between addition and subtraction; relate the strategy to a written method. (CCSS: 2.NBT.7)
2.1.1.b.v. Explain why addition and subtraction strategies work, using place value and the properties of operations. (CCSS: 2.NBT.9)

2.1.2. Formulate, represent, and use strategies to add and subtract within 100 with flexibility, accuracy, and efficiency. Students can:

2.1.2.a. Represent and solve problems involving addition and subtraction. (CCSS: 2.OA)
2.1.2.a.i. Use addition and subtraction within 100 to solve one- and two-step word problems involving situations of adding to, taking from, putting together, taking apart, and comparing, with unknowns in all positions. (CCSS: 2.OA.1)
2.1.2.a.ii. Apply addition and subtraction concepts to financial decision making (PFL).
2.1.2.b. Fluently add and subtract within 20 using mental strategies. (CCSS: 2.OA.2)
2.1.2.c. Know from memory all sums of two one-digit numbers. (CCSS: 2.OA.2)
2.1.2.d. Use equal groups of objects to gain foundations for multiplication. (CCSS: 2.OA)
2.1.2.d.ii. Write an equation to express an even number as a sum of two equal addends. (CCSS: 2.OA.3)

CO.2.3. Data Analysis, Statistics, and Probability

2.3.1. Visual displays of data can be constructed in a variety of formats to solve problems. Students can:

2.3.1.a. Represent and interpret data. (CCSS: 2.MD)
2.3.1.a.i. 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. (CCSS: 2.MD.9)
2.3.1.a.ii. Draw a picture graph and a bar graph (with single-unit scale) to represent a data set with up to four categories. (CCSS: 2.MD.10)
2.3.1.a.iii. Solve simple put together, take-apart, and compare problems using information presented in picture and bar graphs. (CCSS: 2.MD.10)

CO.2.4. Shape, Dimension, and Geometric Relationships

2.4.1. Shapes can be described by their attributes and used to represent part/whole relationships. Students can:

2.4.1.a. Recognize and draw shapes having specified attributes, such as a given number of angles or a given number of equal faces. (CCSS: 2.G.1)
2.4.1.b. Identify triangles, quadrilaterals, pentagons, hexagons, and cubes. (CCSS: 2.G.1)
2.4.1.d. Partition circles and rectangles into two, three, or four equal shares, describe the shares using the words halves, thirds, half of, a third of, etc., and describe the whole as two halves, three thirds, four fourths. (CCSS: 2.G.3)
2.4.1.e. Recognize that equal shares of identical wholes need not have the same shape. (CCSS: 2.G.3)

2.4.2. Some attributes of objects are measurable and can be quantified using different tools. Students can:

2.4.2.a. Measure and estimate lengths in standard units. (CCSS: 2.MD)
2.4.2.a.i. Measure the length of an object by selecting and using appropriate tools such as rulers, yardsticks, meter sticks, and measuring tapes. (CCSS: 2.MD.1)
2.4.2.a.iv. Measure to determine how much longer one object is than another, expressing the length difference in terms of a standard length unit. (CCSS: 2.MD.4)
2.4.2.b. Relate addition and subtraction to length. (CCSS: 2.MD)
2.4.2.b.ii. Represent whole numbers as lengths from 0 on a number line diagram and represent whole-number sums and differences within 100 on a number line diagram. (CCSS: 2.MD.6)
2.4.2.c. Solve problems time and money. (CCSS: 2.MD)
2.4.2.c.i. Tell and write time from analog and digital clocks to the nearest five minutes, using a.m. and p.m. (CCSS: 2.MD.7)

NewPath Learning resources are fully aligned to US Education Standards. Select a standard below to view correlations to your selected resource:

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