1.OA.B Operations and Algebraic Thinking online worksheets for Grade 1

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Explore the fascinating world of numbers with our Grade 1 1.OA.B Operations and Algebraic Thinking online worksheets! Tailored especially for young learners, these interactive worksheets are designed to foster a strong foundation in basic mathematical concepts. Engaging and fun, they cover key topics such as addition, subtraction, and problem-solving strategies, aligning perfectly with Grade 1 curriculum standards. Whether your child is just beginning their mathematical journey or looking to reinforce their skills, our carefully crafted exercises offer a perfect blend of challenge and enjoyment. Dive into our collection today and watch your child's confidence and competence in math soar!

Check out this FREE Grade 1 1.OA.B Trial Lesson!

Unknown Number Word Problems

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  • 1.OA.B
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Missing Number Word Problems Worksheet
Missing Number Word Problems Worksheet

Missing Number Word Problems Worksheet

Read the word problems in this worksheet to your students. Help them understand the meaning, then translate the text into equations. Check the equations for accuracy, circle the correct solutions, and support your child as they learn to solve word problems.
Missing Number Word Problems Worksheet
Worksheet
Missing 12 Worksheet
Missing 12 Worksheet

Missing 12 Worksheet

Help your kids find the missing number in this fun nature worksheet. Engage them with this educational exercise - combining teaching and fun. Encourage them to practice addition and subtraction skills. Look at the picture with them. Which equations have 12 as the missing number? Guide them to trace the dotted lines for the correct answers.
Missing 12 Worksheet
Worksheet
Turn It down! Subtracting Sounds Worksheet
Turn It down! Subtracting Sounds Worksheet

Turn It down! Subtracting Sounds Worksheet

If your kids need a boost in math, this worksheet is ideal! It'll help them practice their subtraction skills and understand math better. Spend time with them, and they'll enjoy the subject even more. The worksheet includes questions where they have to identify the missing number. Guide them and check their answers.
Turn It down! Subtracting Sounds Worksheet
Worksheet
Solving Problems with Flags of the World Worksheet
Solving Problems with Flags of the World Worksheet

Solving Problems with Flags of the World Worksheet

Name some countries you know with your kids, then introduce their flags with this worksheet. Help them find the missing number in each addition problem, and then check the answer. It's a fun way to learn about different countries near and far.
Solving Problems with Flags of the World Worksheet
Worksheet
Properties of Addition Maze: Voting Worksheet
Properties of Addition Maze: Voting Worksheet

Properties of Addition Maze: Voting Worksheet

The good citizen in the worksheet needs your child's help to vote. Ask them to draw a line through all equations with correct sums to get the citizen to the polls. Voting is the right and obligation of all good citizens. It helps elect the right candidates and exercise legal rights.
Properties of Addition Maze: Voting Worksheet
Worksheet
Missing Number: Monster Math Worksheet
Missing Number: Monster Math Worksheet

Missing Number: Monster Math Worksheet

Engage your child in monster math fun with a worksheet! They'll need to use their counting, addition and subtraction skills to solve equations on both sides. On the left side, they must complete an addition problem and on the right, the equation is in subtraction form. Assist them in selecting the right number out of the given options to make both equations true.
Missing Number: Monster Math Worksheet
Worksheet
Cherry Number Bonds Worksheet
Cherry Number Bonds Worksheet

Cherry Number Bonds Worksheet

Help your child figure out which number on the right side is missing from the equation. Look at the worksheet together and you'll see that the numbers on the leaves are the sum of the numbers on the cherries.
Cherry Number Bonds Worksheet
Worksheet
Part, Part, Whole Worksheet
Part, Part, Whole Worksheet

Part, Part, Whole Worksheet

Help your child find the missing numbers in the puzzles. The worksheet combines fun and maths - stimulating the brain while keeping them engaged. Colourful pages will keep the learning enjoyable. Simple addition and subtraction will ensure they stay entertained.
Part, Part, Whole Worksheet
Worksheet
How Many More to Add Worksheet
How Many More to Add Worksheet

How Many More to Add Worksheet

Sharpen your child's math skills with this pdf worksheet. Help them figure out how many apples, bees, flowers and bananas are needed to reach the answer given. The possible answers are provided at the bottom of the boxes. Have some fun doing some addition and subtraction magic together and get those math skills sharpened!
How Many More to Add Worksheet
Worksheet
Bee Addition: Associative Property Practice Worksheet
Bee Addition: Associative Property Practice Worksheet

Bee Addition: Associative Property Practice Worksheet

Come to the beehive to practice the associative property of addition! This worksheet will help your child better understand addition facts. Compare equations to the 3-digit problem in the hive, solve each to find the correct answers, and trace the dotted line to show the worker bees home. Complete the sheet to find all the matching equations!
Bee Addition: Associative Property Practice Worksheet
Worksheet
Space Addition: Identity Property Practice Worksheet
Space Addition: Identity Property Practice Worksheet

Space Addition: Identity Property Practice Worksheet

After learning about the identity property of addition, let your little mathematician put it into practice with Kids Academy's fun worksheet! Blast off into outer space and have them add by zero, discovering the total sum and solving equations with missing numbers. This is a great pre-algebraic exercise!
Space Addition: Identity Property Practice Worksheet
Worksheet
Train Addition: Associative Property Worksheet
Train Addition: Associative Property Worksheet

Train Addition: Associative Property Worksheet

The associative property of addition lets us add numbers in any order. Total will remain the same. Help kids practice this pre-algebra skill with a train-themed worksheet. It will help them understand if the equations are equal using this property.
Train Addition: Associative Property Worksheet
Worksheet
Boomerang Addition Worksheet
Boomerang Addition Worksheet

Boomerang Addition Worksheet

Kids know that when a boomerang is thrown, it reverses its path back. The same goes for addition: numbers can be rearranged and the sum will remain the same. Use this worksheet to find matching pairs of colorful boomerangs and equations. Look through each column and use the commutative property to find the pairs with the same sum.
Boomerang Addition Worksheet
Worksheet
Commutative Property of Addition Worksheet
Commutative Property of Addition Worksheet

Commutative Property of Addition Worksheet

Master the commutative property of addition with Kids Academy's worksheet! Kids will have fun with silly elves as they complete the rows, switching or adding the addends. Observe that the sum stays the same no matter the order of the numbers!
Commutative Property of Addition Worksheet
Worksheet