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# Second Grade Math

## Operations and Algebraic Thinking

2.OA.1

Word Problems

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, e.g., by using drawings and equations with a symbol for the unknown number to represent the problem.

2.OA.2

Add and Subtract with Fluency

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

2.OA.2

Math Fact Practice

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

2.OA.3

Odds and Evens

Determine whether a group of objects (up to 20) has an odd or even number of members, e.g., by pairing objects or counting them by 2s; write an equation to express an even number as a sum of two equal addends.

2.OA.4

Arrays

Use addition to find the total number of objects arranged in rectangular arrays with up to 5 rows and up to 5 columns; write an equation to express the total as a sum of equal addends.

## Number and Operations in Base Ten

2.NBT.1.a

Place Value

100 can be thought of as a bundle of ten tens - called a "hundred."

2.NBT.1.b

Place Value

The numbers 100, 200, 300, 400, 500, 600, 700, 800, 900 refer to one, two, three, four, five, six, seven, eight, or nine hundreds (and 0 tens and 0 ones).

2.NBT.2

Skip Counting by 5's

Count within 1000; skip-count by 5s, 10s, and 100s.

2.NBT.3

Numbers to 1000

Read and write numbers to 1000 using base-ten numerals, number names, and expanded form.

2.NBT.4

Compare 3-Digit Numbers

Compare two three-digit numbers based on meanings of the hundreds, tens, and ones digits, using >, =, and < symbols to record the results of comparisons.

2.NBT.5

Add and Subtract within 100

Fluently add and subtract within 100 using strategies based on place value, properties of operations, and/or the relationship between addition and subtraction.

## Measurement and Data

2.MD.1

Measure Length

Measure the length of an object by selecting and using appropriate tools such as rulers, yardsticks, meter sticks, and measuring tapes.

2.MD.7

Tell and Write Time

Tell and write time from analog and digital clocks to the nearest five minutes, using a.m. and p.m.

2.MD.8

Money Word Problems

Solve word problems involving dollar bills, quarters, dimes, nickels, and pennies, using \$ and ¢ symbols appropriately.

2.MD.8

Coin Values

Solve word problems involving dollar bills, quarters, dimes, nickels, and pennies, using \$ and ¢ symbols appropriately.

2.MD.10

Using Bar Graphs

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.

## Geometry

2.G.1

Name and Draw Shapes

Recognize and draw shapes having specified attributes, such as a given number of angles or a given number of equal faces. Identify triangles, quadrilaterals, pentagons, hexagons, and cubes.

2.G.2.i

Divide Rectangles

Partition a rectangle into equal sized squares.

2.G.2.ii

Divide Rectangles

Count the number of equal-sized squares in a partitioned rectangle.

2.G.3

Halves, Thirds, and Fourths

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. Recognize that equal shares of identical wholes need not have the same shape.