Grade 2 2.OA Operations and Algebraic Thinking Represent and solve problems involving addition and subtraction. 2.OA.1: Use addition and subtraction to 100 to solve one- & two- step word problems (including situations involving adding to, taking from, putting together, taking apart, and comparing, with unknowns in all positions). (Example: Mary has 65 books. Jenny gives her some more. Now Mary has 83 books. How many books did Jenny give her? 65+N=83) Add and subtract within 20. 2.OA.2: Fluently add and subtract 0 – 20 mentally; Know all addition facts (0 – 9) by the end of grade 2. Work with equal groups of objects to gain foundations for multiplication. 2.OA.3: Determine whether a group of objects (up to 20) has an odd or even number; write an equation to express an even number as the sum of two equal addends. (Example: By pairing or counting by 2; 2 + 2 = 4) 2.OA.4: Add to find the number of objects in a rectangular array (up to 5 rows & 5 columns); write an equation to express the total as a sum of equal addends. (Example: 4 + 4 + 4 + 4 = 16) 2.NBT Number and Operations in Base Ten Understand place value. 2.NB.1: Understand the place value of three digit numbers. (Example: 743 is equal to 7 hundreds, 4 tens, and 3 ones.) - 2.NB.1.A 100 is equal to a bundle of ten tens.
- 2.NB.1.B Relate the numbers in the hundreds (100, 200, etc.) to the words (one hundred, two hundred, etc.)
2.NBT.2: Count to 1,000; including skip counting by 5s, 10s, and 100s. 2.NBT.3: Read and Write numbers to 1,000 using numerals, number names, and expanded form. (Example: 693; six hundred ninety-three; 600 + 90+ 3) 2.NBT.4: Compare two three-digit numbers using >, <, and = symbols to compare. (Example: 456 > 365) Use place value and properties of operations to add and subtract. 2.NBT.5: Fluently add and subtract to 100 using strategies with place value, properties of operations, and/or the relationship between addition and subtraction 2.NBT.6: Add four two-digit numbers using strategies based on place value and properties of operations. (Example: 23 + 65 + 4 + 19 = ) 2.NBT.7: Add and subtract to 1,000, using models, or drawings and strategies including adding or subtracting from the correct place (hundreds from hundreds, etc.) and borrowing or carrying if needed. 2.NBT.8: Mentally add and subtract 10 or 100 to numbers 100-900. 2.NBT.9: Explain why addition and subtraction strategies work, using place value and the properties of operations. 2.MD Measurement and Data Measure and estimate lengths in standard units. 2.MD.1: Measure the length of an object by choosing & using appropriate tools. (Example: Including using rulers, yardsticks, meter sticks, and measuring tapes.) 2.MD.2: Measure the length of an object twice, using different units for each measurement; describe how the two measurements relate to the size of the units chosen. (Example: Inches and centimeters; There are more centimeters since it is a smaller unit.) 2.MD.3: Estimate length using inches, feet, centimeters, and meters. 2.MD.4: Measure to determine how much longer one object is than another and answer in a unit length. (Example: The red book is 3 inches longer than the blue book.) Relate addition and subtraction to length. 2.MD.5: Use addition and subtraction to 100 to solve word problems involving lengths that are given in the same units by using drawings; use a symbol for the unknown letter to write an equation representing the problem. (Example: Drawings such as drawings of rulers; The red line is 23 inches long and the blue line is 14 inches long. How long are the two line together?; 23 + 14 = N) 2.MD.6: Represent whole numbers as lengths on a number line; describe adding and subtracting whole numbers to 100 and with a number line. (Example: The line is 6 units long; 67 – 63 is 4 or 4 units.) Work with time and money. 2.MD.7: Read and write time from analog and digital clocks to the nearest five minutes, using a.m. and p.m. IA.1: Describe the relationship among standard units of time including minutes, hours, days, weeks, months and years. (Example: 60 minutes in an hour, etc.) 2.MD.8: Solve word problems involving dollar bills, quarters, dimes, nickels, and pennies; use a dollar sign and cent sign appropriately. (Example: If you have 2 dimes and 3 pennies, how many cents do you have?) Represent and interpret data. 2.MD.9: Gather measurement data by measuring lengths of several objects to the nearest whole unit, or by making repeated measurements of the same object and create a line plot with whole number units. IA.2: Use interviews, surveys, and observations to collect data that answer questions about students’ interests and/or environment. (Example: Survey students to collect data on their favorite colors.) 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 and solve simple problems using the data (including put-together, take-apart, and comparing). (Example: How many votes did pizza and hamburgers get?; How many more votes did hotdogs get than hamburgers?; Which food received the most votes?) 2.G Geometry Reason with shapes and their attributes. 2.G.1: Name and draw shapes that have specific characteristics and identify triangles, quadrilaterals, pentagons, hexagons, and cubes. (Example: Given number of angles, given number of equal faces, etc.) 2.G.2: Divide a rectangle into rows and columns of same-size squares and count to find the total number of them. 2.G.3: Divide circles and rectangles into two, three, or four equal parts and describe the parts using the words halves, thirds, half of, a third of, etc.; describe the whole in parts. (Example: The square is divided into halves; two halves, three thirds, etc.) |

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