Skills available for
Indiana second-grade math standards
Standards
are in bold, followed by a list of the IXL math
skills that are aligned to that
standard.
Students can practice
these skills
online at www.ixl.com.
2.NS Number Sense
2.NS.1 Count by ones, twos, fives, tens, and hundreds up to at least 1,000 from any given number.
Skip-counting (Second grade - A.1)
Skip-counting sequences (Second grade - A.2)
Counting patterns - up to 100 (Second grade - A.3)
Hundreds chart (Second grade - A.5)
Skip-counting stories (Second grade - A.11)
Skip-counting puzzles (Second grade - A.12)
Counting patterns - up to 1,000 (Second grade - A.14)
2.NS.2 Read and write whole numbers up to 1,000. Use words, models, standard form and expanded form to represent and show equivalent forms of whole numbers up to 1,000.
Writing numbers up to 100 in words (Second grade - C.3)
Writing numbers up to 1,000 in words (Second grade - C.4)
Place value models - tens and ones (Second grade - M.1)
Place value models - up to hundreds (Second grade - M.2)
Value of underlined digit - tens and ones (Second grade - M.4)
Value of underlined digit - up to hundreds (Second grade - M.5)
Regrouping tens and ones I (Second grade - M.7)
Regrouping tens and ones II (Second grade - M.8)
Convert to/from a number - tens and ones (Second grade - M.9)
Convert to/from a number - up to hundreds (Second grade - M.10)
Convert from expanded form - up to hundreds (Second grade - M.13)
2.NS.3 Plot and compare whole numbers up to 1,000 on a number line.
Number lines - up to 100 (Second grade - A.4)
Number lines - up to 1,000 (Second grade - A.13)
2.NS.4 Match the ordinal numbers first, second, third, etc., with an ordered set up to 30 items.
Ordinal numbers up to 10th (Second grade - C.1)
2.NS.5 Determine whether a group of objects (up to 20) has an odd or even number of members (e.g., by placing that number of objects in two groups of the same size and recognizing that for even numbers no object will be left over and for odd numbers one object will be left over, or by pairing objects or counting them by 2s).
Even and odd: counting objects (Second grade - A.6)
Even or odd I (Second grade - A.7)
Even or odd II (Second grade - A.8)
Even and odd numbers on number lines (Second grade - A.9)
2.NS.6 Understand that the three digits of a three-digit number represent amounts of hundreds, tens, and ones (e.g., 706 equals 7 hundreds, 0 tens, and 6 ones). Understand that 100 can be thought of as a group of ten tens -- called a "hundred." Understand that 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).
Hundreds chart (Second grade - A.5)
Place value models - tens and ones (Second grade - M.1)
Place value models - up to hundreds (Second grade - M.2)
Value of underlined digit - tens and ones (Second grade - M.4)
Value of underlined digit - up to hundreds (Second grade - M.5)
Regrouping tens and ones I (Second grade - M.7)
Regrouping tens and ones II (Second grade - M.8)
Convert to/from a number - tens and ones (Second grade - M.9)
Convert to/from a number - up to hundreds (Second grade - M.10)
Convert from expanded form - up to hundreds (Second grade - M.13)
Convert from expanded form - up to thousands (Second grade - M.14)
Identify the digit in the ones, tens, hundreds, or thousands place (Second grade - M.15)
2.NS.7 Use place value understanding to compare two three-digit numbers based on meanings of the hundreds, tens, and ones digits, using >, =, and < symbols to record the results of comparisons.
Comparing numbers up to 100 (Second grade - B.1)
Comparing numbers up to 1,000 (Second grade - B.3)
Put numbers up to 100 in order (Second grade - B.4)
Put numbers up to 1,000 in order (Second grade - B.5)
Greatest and least - word problems - up to 100 (Second grade - B.6)
Greatest and least - word problems - up to 1,000 (Second grade - B.7)
Review - subtract one-digit numbers - up to 10 (Second grade - F.1)
Subtract a one-digit number from a two-digit number up to 18 (Second grade - F.4)
Subtraction input/output tables - up to 18 (Second grade - F.7)
Subtract zero/all (Second grade - F.8)
Add multiples of 10 (Second grade - G.1)
Add a two-digit and a one-digit number - without regrouping (Second grade - G.2)
Add a two-digit and a one-digit number - with regrouping (Second grade - G.3)
Add two two-digit numbers - without regrouping (Second grade - G.4)
Add two two-digit numbers - with regrouping (Second grade - G.5)
Addition input/output tables - up to two digits (Second grade - G.7)
Add three numbers up to two digits each (Second grade - G.13)
Add four or more numbers up to two digits each (Second grade - G.15)
Subtract multiples of 10 (Second grade - H.1)
Subtract a one-digit number from a two-digit number - without regrouping (Second grade - H.2)
Subtract a one-digit number from a two-digit number - with regrouping (Second grade - H.3)
Subtract two two-digit numbers - without regrouping (Second grade - H.4)
Subtract two two-digit numbers - with regrouping (Second grade - H.5)
Write subtraction sentences to describe pictures - up to two digits (Second grade - H.6)
Subtraction input/output tables - up to two digits (Second grade - H.7)
Add and subtract numbers up to 20 (Second grade - L.1)
Add and subtract numbers up to 100 (Second grade - L.7)
2.CA.2 Solve real-world problems involving addition and subtraction within 100 in situations of adding to, taking from, putting together, taking apart, and comparing, with unknowns in all parts of the addition or subtraction problem (e.g., by using drawings and equations with a symbol for the unknown number to represent the problem). Use estimation to decide whether answers are reasonable in addition problems.
Addition with pictures - sums to 20 (Second grade - E.5)
Write addition sentences to describe pictures - sums to 20 (Second grade - E.6)
Add doubles using models (Second grade - E.9)
Add doubles - complete the sentence (Second grade - E.11)
Addition word problems - one digit (Second grade - E.12)
Complete the addition sentence - one digit (Second grade - E.13)
Write the addition sentence - one digit (Second grade - E.14)
Addition equations: true or false? (Second grade - E.16)
Add three one-digit numbers: word problems (Second grade - E.18)
Review - writing subtraction sentences - up to 10 (Second grade - F.3)
Subtraction with pictures (Second grade - F.5)
Write subtraction sentences to describe pictures - up to 18 (Second grade - F.6)
Subtraction word problems - up to 18 (Second grade - F.9)
Complete the subtraction sentence - up to 18 (Second grade - F.10)
Write the subtraction sentence - up to 18 (Second grade - F.11)
Subtraction equations: true or false? (Second grade - F.13)
Write addition sentences to describe pictures (Second grade - G.6)
Ways to make a number using addition (Second grade - G.8)
Addition word problems - up to two digits (Second grade - G.9)
Complete the addition sentence - up to two digits (Second grade - G.10)
Write the addition sentence - up to two digits (Second grade - G.11)
Balance addition equations - up to two digits (Second grade - G.12)
Add three numbers up to two digits each: word problems (Second grade - G.14)
Add four or more numbers up to two digits each: word problems (Second grade - G.16)
Write subtraction sentences to describe pictures - up to two digits (Second grade - H.6)
Subtraction word problems - up to two digits (Second grade - H.9)
Complete the subtraction sentence - up to two digits (Second grade - H.10)
Write the subtraction sentence - up to two digits (Second grade - H.11)
Balance subtraction equations - up to two digits (Second grade - H.12)
Addition and subtraction word problems - up to 20 (Second grade - L.3)
Addition and subtraction equations up to 20: true or false? (Second grade - L.5)
Addition and subtraction - ways to make a number - up to 100 (Second grade - L.8)
Addition and subtraction word problems - up to 100 (Second grade - L.9)
Addition and subtraction - balance equations - up to 100 (Second grade - L.10)
Write addition and subtraction sentences (Second grade - L.13)
Estimate sums (Second grade - N.5)
Add and subtract money - up to $1: word problems (Second grade - P.14)
2.CA.3 Solve real-world problems involving addition and subtraction within 100 in situations involving lengths that are given in the same units (e.g., by using drawings, such as drawings of rulers, and equations with a symbol for the unknown number to represent the problem).
Customary units of length: word problems (Second grade - S.4)
Metric units of length: word problems (Second grade - S.10)
Perimeter - word problems (Second grade - T.12)
2.CA.4 Add and subtract within 1000, using models or drawings and strategies based on place value, properties of operations, and/or the relationship between addition and subtraction; describe the strategy and explain the reasoning used. Understand that in adding or subtracting three-digit numbers, one adds or subtracts hundreds and hundreds, tens and tens, ones and ones, and that sometimes it is necessary to compose or decompose tens or hundreds.
Add multiples of 100 (Second grade - I.1)
Add two three-digit numbers (Second grade - I.2)
Addition input/output tables - up to three digits (Second grade - I.3)
Addition word problems - up to three digits (Second grade - I.4)
Complete the addition sentence - up to three digits (Second grade - I.5)
Write the addition sentence - up to three digits (Second grade - I.6)
Balance addition equations - up to three digits (Second grade - I.7)
Subtract multiples of 100 (Second grade - J.1)
Subtract three-digit numbers (Second grade - J.2)
Subtraction input/output tables - up to three digits (Second grade - J.3)
Subtraction word problems - up to three digits (Second grade - J.4)
Complete the subtraction sentence - up to three digits (Second grade - J.5)
Write the subtraction sentence - up to three digits (Second grade - J.6)
Balance subtraction equations - up to three digits (Second grade - J.7)
2.CA.5 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 groups.
Identify repeated addition in arrays: sums to 10 (Second grade - E.21)
Write addition sentences for arrays: sums to 10 (Second grade - E.22)
Identify repeated addition in arrays: sums to 25 (Second grade - E.23)
Write addition sentences for arrays: sums to 25 (Second grade - E.24)
Multiplication sentences (Second grade - W.1)
2.CA.6 Show that the order in which two numbers are added (commutative property) and how the numbers are grouped in addition (associative property) will not change the sum. These properties can be used to show that numbers can be added in any order.
Related addition facts (Second grade - K.1)
2.CA.7 Create, extend, and give an appropriate rule for number patterns using addition and subtraction within 1000.
Skip-counting sequences (Second grade - A.2)
Counting patterns - up to 100 (Second grade - A.3)
Counting patterns - up to 1,000 (Second grade - A.14)
Input/output tables - write the rule - up to 20 (Second grade - L.6)
Input/output tables - write the rule - up to 100 (Second grade - L.11)
2.G Geometry
2.G.1 Identify, describe, and classify two- and three-dimensional shapes (triangle, square, rectangle, cube, right rectangular prism) according to the number and shape of faces and the number of sides and/or vertices. Draw two-dimensional shapes.
Count edges, vertices, and faces (Second grade - T.5)
Compare edges, vertices, and faces (Second grade - T.7)
2.G.2 Create squares, rectangles, triangles, cubes, and right rectangular prisms using appropriate materials.
2.G.3 Investigate and predict the result of composing and decomposing two- and three-dimensional shapes.
2.G.4 Partition a rectangle into rows and columns of same-size (unit) squares and count to find the total number of same-size squares.
Area (Second grade - T.13)
2.G.5 Partition circles and rectangles into two, three, or four equal parts; 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 parts of identical wholes need not have the same shape.
Equal parts (Second grade - U.1)
Halves, thirds, and fourths (Second grade - U.2)
Identify the fraction (Second grade - U.3)
Fraction models equivalent to whole numbers (Second grade - U.9)
2.M Measurement
2.M.1 Describe the relationships among inch, foot, and yard. Describe the relationship between centimeter and meter.
Compare and convert customary units of length (Third grade - Q.5)
Compare and convert metric units of length (Third grade - Q.11)
2.M.2 Estimate and measure the length of an object by selecting and using appropriate tools, such as rulers, yardsticks, meter sticks, and measuring tapes to the nearest inch, foot, yard, centimeter and meter.
Measure using an inch ruler (Second grade - S.2)
Which customary unit of length is appropriate? (Second grade - S.3)
Measure using a centimeter ruler (Second grade - S.8)
Which metric unit of length is appropriate? (Second grade - S.9)
Choose the appropriate measuring tool (Second grade - S.15)
2.M.3 Understand that the length of an object does not change regardless of the units used. Measure the length of an object twice using length units of different lengths for the two measurements. Describe how the two measurements relate to the size of the unit chosen.
2.M.4 Estimate and measure volume (capacity) using cups and pints.
Which customary unit of volume is appropriate? (Second grade - S.6)
2.M.5 Tell and write time to the nearest five minutes from analog clocks, using a.m. and p.m. Solve real-world problems involving addition and subtraction of time intervals on the hour or half hour.
Reading clocks (Second grade - Q.3)
Match clocks and times (Second grade - Q.5)
Match analog and digital clocks (Second grade - Q.6)
A.M. and P.M. (Second grade - Q.8)
Compare clocks (Second grade - Q.9)
Elapsed time I (Second grade - Q.10)
Elapsed time II (Second grade - Q.11)
Time patterns (Second grade - Q.17)
2.M.6 Describe relationships of time, including: seconds in a minute; minutes in an hour; hours in a day; days in a week; and days, weeks, and months in a year.
Number of days in each month (Second grade - Q.15)
Relate time units (Second grade - Q.16)
2.M.7 Find the value of a collection of pennies, nickels, dimes, quarters and dollars.
Names and values of common coins (Second grade - P.1)
Count money - up to $1 (Second grade - P.4)
Count money - up to $5 (Second grade - P.5)
Equivalent amounts of money - up to $1 (Second grade - P.6)
Equivalent coins II (Second grade - P.8)
Which picture shows more - up to $5 (Second grade - P.15)
Purchases - do you have enough money - up to $1 (Second grade - P.17)
Purchases - do you have enough money - up to $5 (Second grade - P.18)
2.DA Data Analysis
2.DA.1 Draw a picture graph (with single-unit scale) and a bar graph (with single-unit scale) to represent a data set with up to four choices (What is your favorite color? red, blue, yellow, green). Solve simple put-together, take-apart, and compare problems using information presented in the graphs.