Grade 2
Students in Second grade are expected to…
Understand that the three digits of a three-digit number represent amounts of hundreds, tens, and ones.
Compare two three-digit numbers based on meanings of the hundreds, tens, and ones digits, using >, =, and < symbols to record the results of comparisons.
Count within 1000; skip-count by 5s, 10s, and 100s.
Read and write numbers to 1000 using base-ten numerals, number names, and expanded form.
Students in Second grade are expected to….
Add up to four two-digit numbers using strategies based on place value and properties of operations.
Add and subtract within 1000.
Understand that in adding or subtracting three-digit numbers, one adds or subtracts hundreds and hundreds, tens and tens, ones and ones; and sometimes it is necessary to compose or decompose tens or hundreds.
Explain why addition and subtraction strategies work, using place value and the properties of operations
Use addition and subtraction within 100 to solve one- and two-step word problems by using drawings and equations with a symbol for the unknown number to represent the problem.
Solve word problems that call for addition of three whole numbers whose sum is less than or equal to 20.
Understand subtraction as an unknown-addend problem. For example, subtract 10 – 8 by finding the number that makse 10 when added to 8.
Add and subtract within 20. Use strategies such as counting on; making ten; decomposing a number leading to a ten; using the relationship between addition and subtraction; and creating equivalent but easier or known sums
Students in Second grade are expected to….
Fluently add and subtract within 20 using mental strategies.
Apply properties of operations as strategies to add and subtract (commutative property of addition; associative property of addition).
Students in Second grade are expected to….
Determine whether a group of objects (up to 20) has an odd or even number of members and write an equation to express an even number as a sum of two equal addends.
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.
Students in Second grade are expected to….
Recognize and draw shapes having specified attributes.
Identify triangles, quadrilaterals, pentagons, hexagons, and cubes.
Students in Second grade are expected to….
Partition circles and rectangles into two, three, or four equal shares.
Recognize that equal shares of identical wholes need not have the same shape.
Students in Second grade are expected to….
Measure the length of an object by selecting and using appropriate tools such as rulers, yardsticks, meter sticks, and measuring tapes.
Measure the same length with different-sized units then discuss the measurement made with the smaller unit is more than the measurement made with the larger unit and vice versa.
Estimate lengths using units of inches, feet, centimeters, and meters
Measure to determine how much longer one object is than another, expressing the length difference in terms of a standard length unit.
Students in Second grade are expected to….
Tell and write time from analog and digital clocks to the nearest five minutes.
Solve word problems involving dollar bills, quarters, dimes, nickels, and pennies, using $ and ¢ symbols appropriately.
Students in Second grade are expected to….
Make a line plot to show measurement data of the lengths of several objects to the nearest whole-number unit.
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 the graph.