Second Grade Math Standards
What I need to learn by the end of 2nd grade in math / Helpful Hints and Examples· I know how to group numbers by tens and ones between 10 and 100.
· I can read, write, and represent whole numbers up to 120.
· I can count, with and without objects, forward and backward up to 120.
· I can find a number that is 10 more or 10 less than a given number.
· I can compare and order numbers up to 120.
· I can compare numbers using the words equal to, not equal to, more than, less than, fewer than, is about, and is nearly to describe numbers.
· I can organize information on a graph.
· I can add and subtract in a variety of ways.
· I can create and take apart numbers up to 12.
· I can skip count by 2’s, 5’s and 10’s up to 100.
· I can read, write, and represent whole numbers up to 1000.
· I can identify, create, and extend simple patterns using objects, pictures, numbers, and rules.
· I can tell about the place value of numbers between 10 and 1000.
· I can find 10 more or 10 less than a given three-digit number.
· I can find 100 more or 100 less than a given three-digit number.
· I can round numbers up and down to the nearest 10 and 100.
· I can compare and order whole numbers up to 1000.
· I can use strategies to add and subtract.
· I can add and subtract quickly from 0 to 20 using my memory.
· I can estimate sums and differences up to 100.
· I can add and subtract two-digit numbers using without regrouping.
· I know that patterns can be extended and described by a rule.
· I can solve problems with number equations to find an unknown number.
· I can use number sentences to match a problem.
· I can name squares, circles, triangles, rectangles, trapezoids, hexagons, cubes, rectangular prisms, cones, cylinders, and spheres.
· I can use the number of sides, edges, and vertices to describe and compare two- and three-dimensional figures.
· I know that different measuring tools will give me different answers.
· I can use a ruler to measure lengths to the nearest centimeter or inches.
· I can make different combinations of coins to make a given amount.
· I can solve real-world problems with numbers up to 99 using addition and subtraction.
· I can use an analog, as well as a digital clock to talk about the time.
· I can look for geometric shapes in buildings, magazines and stores with my child.
· I can use geometric vocabulary to tell how shapes are alike and different.
· I can measure objects in my house using nonstandard units of measurement (shoes, pencils, etc.) as well as measure the same objects using standard units of measurement (meter stick, tape measure, ruler).
· I can tell time to the quarter hour and know the difference between A.M. and P.M.
· I can identify pennies, nickels, dimes, and quarters. / · Group by tens and ones using cherries, popcorn, etc.
· Have your child write a number line from 1-120.
· Practice counting with your child orally.
· Look for patterns among numbers.
· Have your child write the numbers 1-120 on cards and then put in order.
· 12=12, 13<18, 12=18, 18>13
· At home graph your favorite pizza topping, dessert, etc.
· (6+6=12, 8+4=12, 13-1-12, 4+8=12)
· Have your child verbally clap count by 2’s, 5’s and 10's.
· ABB, ABB. . .
· 385 may be formed by 300 + 80 + 5.
· Examples: 49, 71, 83, 117, 151, 190
· Use loose change found around the house or car and have your child make different amounts in different ways
· I can weigh fruits and vegetables (and compare the weights) in the grocery store with my child.
· Lay objects out, like 2 keys and 3 apples and then have your child write a number sentence about the object.
· Give your child three, three-digit numbers and have them put them in order. Like numbers, doubles, groups of tens.
· I can practice math facts with my child in short bursts (no longer than 5-10 minutes).
· I can play games to help my child memorize addition and subtraction facts. (example: dice games, card games, dominoes, jacks, etc.)
· Skip counting by 2’s, 5’s, 10’s to larger numbers.
· I can look for geometric shapes in buildings, magazines and stores with my child.
· I can use geometric vocabulary to tell how shapes are alike and different with my child.
· I can measure objects in my house with non-standard units of measurement (shoes, pencils, etc.) as well as measure the same objects with a meter stick or tape measure.
· Use loose change found around the house or car and have your child make different amounts in different ways.
· I can use tables, bar graphs and tally charts to add and subtract.