IXL Math - Washington first-grade math standards

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Skills available for Washington first-grade math standards

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1.1 Whole number relationships

1.1.A Count by ones forward and backward from 1 to 120, starting at any number, and count by twos, fives, and tens to 100.
1.1.B Name the number that is one less or one more than any number given verbally up to 120.
- Counting and number patterns: Counting forward and backward (First grade - A.9)
1.1.C Read aloud numerals from 0 to 1,000.
- Counting and number patterns: Writing numbers in words (First grade - A.17)
1.1.D Order objects or events using ordinal numbers.
- Counting and number patterns: Ordinal numbers (First grade - A.16)
1.1.E Write, compare, and order numbers to 120.
1.1.F Fluently compose and decompose numbers to 10.
- Counting and number patterns: Counting review - 0 to 10 (First grade - A.1)
1.1.G Group numbers into tens and ones in more than one way.
- Counting and number patterns: Counting tens and ones - up to 30 (First grade - A.3)
- Counting and number patterns: Hundred chart (First grade - A.11)
1.1.H Group and count objects by tens, fives, and twos.
1.1.I Classify a number as odd or even and demonstrate that it is odd or even.
- Counting and number patterns: Identifying even and odd numbers (First grade - A.12)
- Counting and number patterns: Which even or odd number comes before or after? (First grade - A.13)

1.2 Addition and subtraction

1.2.A Connect physical and pictorial representations to addition and subtraction equations.
- Addition: Addition with pictures - sums to 10 (First grade - B.1)
- Subtraction: Subtraction with pictures - numbers up to 10 (First grade - D.1)
1.2.B Use the equal sign (=) and the word equals to indicate that two expressions are equivalent.
1.2.C Represent addition and subtraction on the number line.
- Addition: Ways to make a number (First grade - B.5)
- Subtraction: Ways to make a number (First grade - D.5)
1.2.D Demonstrate the inverse relationship between addition and subtraction by undoing an addition problem with subtraction and vice versa.
- Mixed operations: Addition and subtraction - ways to make a number (First grade - F.1)
- Mixed operations: Which sign makes the number sentence true? (First grade - F.2)
1.2.E Add three or more one-digit numbers using the commutative and associative properties of addition.
- Addition: Adding three numbers (First grade - B.13)
- Addition: Word problems - adding three numbers (First grade - B.14)
1.2.F Apply and explain strategies to compute addition facts and related subtraction facts for sums to 18.
1.2.G Quickly recall addition facts and related subtraction facts for sums equal to 10.
1.2.H Solve and create word problems that match addition or subtraction equations.
- Addition: Word problems - sums to 10 (First grade - B.3)
- Subtraction: Word problems - one-digit numbers (First grade - D.3)
1.2.I Recognize, extend, and create number patterns.
- Counting and number patterns: Sequences - count up and down by 1, 2, 3, 5, and 10 (First grade - A.15)

1.3 Geometric attributes

1.3.A Compare and sort a variety of two- and three-dimensional figures according to their geometric attributes.
1.3.B Identify and name two-dimensional figures, including those in real-world contexts, regardless of size or orientation.
1.3.C Combine known shapes to create shapes and divide known shapes into other shapes.
- Geometry: Relate planar and solid figures (First grade - J.4)

1.4 Concepts of measurement

1.4.A Recognize that objects used to measure an attribute (length, weight, capacity) must be consistent in size.
1.4.B Use a variety of non-standard units to measure length.
- Measurement: Which customary unit of length is appropriate? (First grade - M.2)
1.4.C Compare lengths using the transitive property.
- Measurement: Customary units of length: word problems (First grade - M.3)
1.4.D Use non-standard units to compare objects according to their capacities or weights.
- Measurement: Which customary unit of weight is appropriate? (First grade - M.4)
- Measurement: Compare and convert cups, pints, and quarts (First grade - M.5)
1.4.E Describe the connection between the size of the measurement unit and the number of units needed to measure something.
1.4.F Name the days of the week and the months of the year, and use a calendar to determine a day or month.

1.5 Additional Key Content

1.5.A Represent data using tallies, tables, picture graphs, and bar-type graphs.
- Data and graphs: Record data with tally charts, picture graphs, tables (First grade - L.1)
- Data and graphs: Which bar graph is correct? (First grade - L.4)
1.5.B Ask and answer comparison questions about data.
- Data and graphs: Interpret data in tally charts, picture graphs, tables (First grade - L.2)
- Data and graphs: Interpret bar graphs (First grade - L.3)

1.6 Reasoning, problem solving, and communication

1.6.A Identify the question(s) asked in a problem.
1.6.B Identify the given information that can be used to solve a problem.
- Addition: Word problems - sums to 10 (First grade - B.3)
- Subtraction: Word problems - one-digit numbers (First grade - D.3)
1.6.C Recognize when additional information is required to solve a problem.
1.6.D Select from a variety of problem-solving strategies and use one or more strategies to solve a problem.
- Estimating: Estimate to the nearest ten (First grade - H.1)
- Sorting, ordering, and classifying: Venn diagrams (First grade - Q.1)
1.6.E Answer the question(s) asked in a problem.
1.6.F Identify the answer(s) to the question(s) in a problem.
1.6.G Describe how a problem was solved.
1.6.H Determine whether a solution to a problem is reasonable.