IXL Math - Indiana second-grade math standards

IXL Math

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Skills available for Indiana second-grade math standards

Indiana math standards: 2009 Indiana Academic Standards (Grades K-5)

Indiana math standards: 2000 Indiana Academic Standards (Grades K-6)

Standards are in black and IXL math skills are in blue. Hold your mouse over the name of a skill to view a sample problem. Click on the name of a skill to practice that skill.

Printable version

2.1 Number Sense

2.1.1 Count by ones, twos, fives, and tens to 100.
2.1.2 Identify the pattern of numbers in each group of ten, from tens through nineties.
- Counting and number patterns: Hundreds chart (Second grade - A.5)
2.1.3 Identify numbers up to 100 in various combinations of tens and ones.
2.1.4 Name the number that is ten more or ten less than any number 10 through 90.
- Addition - two digits: Add multiples of 10 (Second grade - G.1)
- Subtraction - two digits: Subtract multiples of 10 (Second grade - H.1)
2.1.5 Compare whole numbers up to 100 and arrange them in numerical order.
2.1.6 Match the number names (first, second, third, etc.) with an ordered set of up to 100 items.
2.1.7 Identify odd and even numbers up to 100.
2.1.8 Recognize fractions as parts of a whole or parts of a group (up to 12 parts).
2.1.9 Recognize, name, and compare the unit fractions: 1/2, 1/3, 1/4, 1/5, 1/6, 1/8, 1/10,and 1/12.
- Fractions: Compare fractions (Second grade - U.5)
- Fractions: Order fractions (Second grade - U.6)
2.1.10 Know that, when all fractional parts are included, the result is equal to the whole and to one.
2.1.11 Collect and record numerical data in systematic ways.
2.1.12 Represent, compare, and interpret data using tables, tally charts, and bar graphs.

2.2 Computation

2.2.1 Model addition of numbers less than 100 with objects and pictures.
2.2.2 Add two whole numbers less than 100 with and without regrouping.
2.2.3 Subtract two whole numbers less than 100 without regrouping.
2.2.4 Understand and use the inverse relationship between addition and subtraction.
2.2.5 Use estimation to decide whether answers are reasonable in addition problems.
- Properties: Solve inequalities using addition and subtraction shortcuts (Second grade - K.5)
- Estimation and rounding: Estimate sums (Second grade - N.5)
2.2.6 Use mental arithmetic to add or subtract 0, 1, 2, 3, 4, 5, or 10 with numbers less than 100.

2.3 Algebra and Functions

2.4 Geometry

2.4.1 Construct squares, rectangles, triangles, cubes, and rectangular prisms with appropriate materials.
2.4.2 Describe, classify, and sort plane and solid geometric shapes (triangle, square, rectangle, cube, rectangular prism) according to the number and shape of faces, and the number of edges and vertices.
2.4.3 Investigate and predict the result of putting together and taking apart two- and three-dimensional shapes.
2.4.4 Identify congruent two-dimensional shapes in any position.
- Geometry: Congruent (Second grade - T.5)
2.4.5 Recognize geometric shapes and structures in the environment and specify their locations.

2.5 Measurement

Measurement: Choose the appropriate measuring tool (Second grade - S.8)

2.5.1 Measure and estimate length to the nearest inch, foot, yard, centimeter, and meter.
- Measurement: Which unit of length is appropriate? (Second grade - S.2)
2.5.2 Describe the relationships among inch, foot, and yard. Describe the relationship between centimeter and meter.
2.5.3 Decide which unit of length is most appropriate in a given situation.
- Measurement: Which unit of length is appropriate? (Second grade - S.2)
2.5.4 Estimate area and use a given object to measure the area of other objects.
- Geometry: Area (Second grade - T.9)
2.5.5 Estimate and measure capacity using cups and pints.
- Measurement: Which unit of volume is appropriate? (Second grade - S.4)
2.5.6 Estimate weight and use a given object to measure the weight of other objects.
- Measurement: Which unit of weight is appropriate? (Second grade - S.3)
2.5.7 Recognize the need for a fixed unit of weight.
2.5.8 Estimate temperature. Read a thermometer in Celsius and Fahrenheit.
- Measurement: Read a thermometer (First grade - M.1)
- Measurement: Read a thermometer (Second grade - S.1)
2.5.9 Tell time to the nearest quarter hour, be able to tell five-minute intervals, and know the difference between a.m. and p.m.
2.5.10 Know relationships of time: seconds in a minute, minutes in an hour, hours in a day, days in a week, and days, weeks, and months in a year.
2.5.11 Find the duration of intervals of time in hours.
2.5.12 Find the value of a collection of pennies, nickels, dimes, quarters, half-dollars, and dollars.

2.6 Problem Solving

Students make decisions about how to set up a problem.
2.6.1 Choose the approach, materials, and strategies to use in solving problems.
- Logical reasoning: Guess the number (Second grade - O.1)
2.6.2 Use tools such as objects or drawings to model problems.
Students solve problems and justify their reasoning.
2.6.3 Explain the reasoning used and justify the procedures selected in solving a problem.
- Mixed operations: Addition and subtraction - balance equations - up to 20 (Second grade - L.2)
- Mixed operations: Addition and subtraction - balance equations - up to 100 (Second grade - L.5)
2.6.4 Make precise calculations and check the validity of the results in the context of the problem.
- Addition - two digits: Add three or more numbers - word problems (Second grade - G.12)
2.6.5 Understand and use connections between two problems.