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1st Grade Math

Washington 1st Grade Math Curriculum

Video lessons and practice for every 1st grade math topic. Aligned to Washington State K-12 Mathematics Standards so your child keeps up with class.

Washington 1st Grade Math Curriculum | StudyPugHelp

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1.OA.A.2

Solve word problems that call for addition of three whole numbers whose sum is less than or equal to 20

1.OA.B.3

Apply properties of operations as strategies to add and subtract

1.OA.B.4

Understand subtraction as an unknown-addend problem

1.OA.C.6

Add and subtract within 20, demonstrating fluency for addition and subtraction within 10

1.OA.D.7

Understand the meaning of the equal sign, and determine if equations involving addition and subtraction are true or false

1.NBT.B.2

Understand that the two digits of a two-digit number represent amounts of tens and ones

1.NBT.B.3

Compare two two-digit numbers based on meanings of the tens and ones digits, recording the results of comparisons with the symbols >, =, and <

1.NBT.C.5

Given a two-digit number, mentally find 10 more or 10 less than the number, without having to count

1.G.A.3

Partition circles and rectangles into two and four equal shares

1st Grade Math Topics in Washington

Washington 1st grade math covers a wide range of foundational skills. Students work on addition and subtraction within 20, including solving word problems and understanding the relationship between addition and subtraction. They also learn to add three whole numbers and apply properties of operations to make adding and subtracting easier.

Place Value and Number Sense

A big part of 1st grade math in Washington is understanding place value. Students learn that a two-digit number is made up of tens and ones, count to 120 starting from any number, and compare two-digit numbers using the symbols >, =, and <. They also practice adding within 100 and mentally finding 10 more or 10 less than a number.

Measurement, Time, and Data

Washington 1st graders develop early measurement skills by ordering objects by length and expressing length in whole number units. They tell and write time in hours and half-hours using analog and digital clocks, and learn to organize and interpret data in up to three categories.

Geometry

Students explore 2D and 3D shapes, learning to identify defining attributes and compose shapes to create new ones. They also partition circles and rectangles into two and four equal shares, which sets the stage for understanding fractions later on.

How StudyPug Helps Washington 1st Graders

StudyPug provides video lessons and practice problems for every topic in the Washington 1st grade math curriculum. Each lesson is short and focused, making it easy for young learners to follow along. Parents and students can find any topic from the table above and start watching right away — no signup required to try sample lessons.

  • Addition and subtraction within 20
  • Place value: tens and ones
  • Counting to 120
  • Comparing two-digit numbers
  • Telling time in hours and half-hours
  • Measurement and data
  • 2D and 3D geometry
  • Equal shares and early fractions