1.NBT.C Number and Operations in Base Ten worksheets With Answers for Grade 1

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Welcome to our comprehensive collection of "1.NBT.C Number and Operations in Base Ten" worksheets designed for Grade 1 students! These engaging printable worksheets come with clear answer keys to enhance learning and facilitate teaching. Tailored to align with educational standards, our resources help young learners master essential concepts such as place value, comparing two-digit numbers, and understanding tens and ones. Each worksheet encourages skill development through fun exercises that make math enjoyable. Perfect for classroom use or at-home practice, our worksheets support educators and parents in fostering mathematical confidence and proficiency in first graders. Start exploring today!


Check out this FREE Grade 1 1.NBT.C Trial Lesson!

Mental Math -Subtract and Add by 10 - Part 2

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Rocket Math Worksheet
Rocket Math Worksheet

Rocket Math Worksheet

Your students will be math wizards in no time as they blast off on this exciting and colorful PDF worksheet. They'll use the 10s strategy to practice addition and subtraction, and they'll learn to skip count forwards and backwards. Keep them engaged and make learning fun!
Rocket Math Worksheet
Worksheet
Counting Tens and Ones: Part 1 Worksheet
Counting Tens and Ones: Part 1 Worksheet

Counting Tens and Ones: Part 1 Worksheet

Kids Academy has a great place value worksheet to help kids learn when they don't have manipulatives at home! It includes longs and cubes that kids can count and add to find the sum. Colorful and downloadable, this page will help kids understand addition and place value better. Give it a try!
Counting Tens and Ones: Part 1 Worksheet
Worksheet
Air Balloon Math Worksheet
Air Balloon Math Worksheet

Air Balloon Math Worksheet

Revised: Review your child's addition and subtraction skills with this fun worksheet. Featuring hot air balloons filled with math equations, help your child add or subtract by ten before ticking the boxes with the right answers. Working through the equations one-by-one is a great way to make math practice enjoyable!
Air Balloon Math Worksheet
Worksheet
Adding a Ten Worksheet
Adding a Ten Worksheet

Adding a Ten Worksheet

Kids Academy offers a colorful addition worksheet with counters in frames to help students learn to add by tens. This skill is essential for students to develop critical math skills and create a foundation for future math concepts. Visual aids aid in mastering this early skill, so get started learning today!
Adding a Ten Worksheet
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Find The Difference Worksheet
Find The Difference Worksheet

Find The Difference Worksheet

Kindergarteners need to work out subtraction problems and get the right answers. To help them, point to the alien ship with '30' in it on the worksheet. Get them to follow a line to the equations with a difference of 30. Solving these simple subtraction problems will give the answers.
Find The Difference Worksheet
Worksheet
Subtraction Quest Worksheet
Subtraction Quest Worksheet

Subtraction Quest Worksheet

Send your little mathematicians on a quest full of fun! This free, downloadable PDF worksheet has them using base ten blocks to decide if the difference in each problem is 34. They'll solve each problem, marking equations where the difference is 34. It's a great way to build number sense and challenge themselves - plus, they won't even realize it's math!
Subtraction Quest Worksheet
Worksheet
Subtracting With Base 10 Blocks Worksheet
Subtracting With Base 10 Blocks Worksheet

Subtracting With Base 10 Blocks Worksheet

Ask your child to count the cubes then help them check the answer. This problem may seem tricky, but it's just basic math. If they can count, they should have no trouble completing the exercise.
Subtracting With Base 10 Blocks Worksheet
Worksheet
Turn Around Dominos Worksheet
Turn Around Dominos Worksheet

Turn Around Dominos Worksheet

Encourage your child to flex their mental muscles with this math worksheet. Look through the left side's dominos and their values and then check the three boxes on the right. Ask your child if any of the right box's dominos are similar. This requires focus and careful observation.
Turn Around Dominos Worksheet
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Let's Regroup Worksheet
Let's Regroup Worksheet

Let's Regroup Worksheet

Counting is fun! Help teach your child with fun, colorful worksheets like this one. For simple sum-adding or counting high numbers, this printout helps them master the problems. Three equations with numbers are at the top. Guide your child to find the correct answer, then draw a line to the sum for each equation.
Let's Regroup 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
Stolen Cheese Case Maze Worksheet
Stolen Cheese Case Maze Worksheet

Stolen Cheese Case Maze Worksheet

Someone has stolen the cheese! Can your mathematician detective figure out who it is? Was it the dog, cat or mouse? Have them use traceable lines to skip count by 10 on this free PDF worksheet to solve the case. They'll be having fun and developing their skip-counting strategy at the same time!
Stolen Cheese Case Maze Worksheet
Worksheet
Garden Subtraction Worksheet
Garden Subtraction Worksheet

Garden Subtraction Worksheet

Help your kids understand math with this fun, garden-themed subtraction worksheet! Have them read the number sentences and count the veggies in each row. Then, subtract 10 from each row to find the answer. They'll love counting the colorful veggies and solving the problems!
Garden Subtraction Worksheet
Worksheet
Addition Equations With Base 10 Blocks Worksheet
Addition Equations With Base 10 Blocks Worksheet

Addition Equations With Base 10 Blocks Worksheet

If your students are struggling with base 10 addition, this worksheet is here to help. Guide them with connecting the blocks to the equation with a line. It's a fun and colourful way to encourage learning.
Addition Equations With Base 10 Blocks Worksheet
Worksheet
Trading and Adding Worksheet
Trading and Adding Worksheet

Trading and Adding Worksheet

Help your child learn place value and addition with this free worksheet! Colorful base blocks let them understand the concept of trading ones for tens. Count the blocks on either side of the equation, add, and if there are ten or more ones, regroup them to make tens. Check the answer to complete the page and take your child's learning to the next level!
Trading and Adding Worksheet
Worksheet
Snowball Math Worksheet
Snowball Math Worksheet

Snowball Math Worksheet

Kids can have a snowball fight and build math skills at the same time with this free worksheet. Kids can use tens to add and subtract for quick math equations and select the correct answers. No need to worry about getting cold either - these snowballs won't chill you!
Snowball Math Worksheet
Worksheet
Fact Families: Find Missing Number Worksheet
Fact Families: Find Missing Number Worksheet

Fact Families: Find Missing Number Worksheet

Assess your student's addition and subtraction knowledge with this worksheet exercise. Task them to identify missing numbers in the fact families and circle the number that completes the pair. Strengthen their reasoning skills and enhance their math concepts.
Fact Families: Find Missing Number Worksheet
Worksheet
Solving Subtraction Equations Worksheet
Solving Subtraction Equations Worksheet

Solving Subtraction Equations Worksheet

Encourage your kids to engage their brains by completing this fun math worksheet! They'll soon realise that the subtraction problems aren't so daunting after all. Assist by drawing a line between each problem and the correct answer, using base 10 blocks to illustrate how many need to be taken away. Your kids will love the colourful printout and gain a better understanding of subtraction.
Solving Subtraction Equations Worksheet
Worksheet
Journey Through Space Worksheet
Journey Through Space Worksheet

Journey Through Space Worksheet

Astronauts are essential explorers. They travel between Earth and other planets to gain knowledge of life in space. Being an astronaut requires strong math skills, so help your child develop them through this worksheet. Ask them to assist Sally on her journey to the planets by solving the number sentences in the picture. Verify the answers are correct.
Journey Through Space Worksheet
Worksheet
Let's Regroup to Add Worksheet
Let's Regroup to Add Worksheet

Let's Regroup to Add Worksheet

Practice regrouping and renaming numbers over ten with this worksheet. Using base ten blocks representations, students will turn single digits into '10s' and '1s', helping them to develop deeper mathematical reasoning, rather than just 'carrying the 1' when adding.
Let's Regroup to Add Worksheet
Worksheet
Night Sky Math Worksheet
Night Sky Math Worksheet

Night Sky Math Worksheet

Kids can use this colorful worksheet to learn math and addition while also exploring the night sky. Invite them to use a telescope to identify the things they see. Ask them to join Ana, the little girl in the worksheet, to count what she saw in two nights. Help them add the totals of each night to find out how many of each item she saw!
Night Sky Math Worksheet
Worksheet
Adding with Base Ten Blocks Worksheet
Adding with Base Ten Blocks Worksheet

Adding with Base Ten Blocks Worksheet

Help your child work on their math skills with this fun worksheet! They must count the colorful boxes, add the figures together, then circle the correct total from the options given. Working through this printable sheet will help them learn in a fun and engaging way.
Adding with Base Ten Blocks Worksheet
Worksheet
Adding With Longs and Cubes Worksheet
Adding With Longs and Cubes Worksheet

Adding With Longs and Cubes Worksheet

Math might not be your child's favorite, but they must master it to advance. If they're having difficulties or don't like it, use this worksheet to make it easier. Have them add longs and cubes together to find the total for each question, then circle the correct answer. This exercise can help make math experiences better.
Adding With Longs and Cubes Worksheet
Worksheet
Addition Practice Sheet: Part 2
Addition Practice Sheet: Part 2

Addition Practice Sheet: Part 2

Make sure your kids understand place value before introducing two/three-digit addition. To help, use Kids Academy's colorful cube worksheet. It provides all the manipulatives needed to solve the problem and find totals. A great way to explain the concept behind the addition!
Addition Practice Sheet: Part 2
Worksheet
Representing Addition with Base 10 Blocks Worksheet
Representing Addition with Base 10 Blocks Worksheet

Representing Addition with Base 10 Blocks Worksheet

Solve addition problems with your little one: help them count the blocks, then select the correct equation from the choices. Circle the answer. Word play and math make a winning combo!
Representing Addition with Base 10 Blocks Worksheet
Worksheet


Parents and teachers should prioritize the understanding of 1.NBT.C (Number and Operations in Base Ten) for Grade 1 students, as it lays a crucial foundation for their mathematical journey. Mastering this standard helps children grasp the concepts of place value, which is essential for their future success in arithmetic. By understanding that numbers are composed of tens and ones, students can perform basic addition and subtraction accurately, moving beyond mere counting.

Furthermore, this knowledge encourages problem-solving skills and logical thinking, as students learn to break down numbers and work with larger values. Proficiency in base ten not only supports students in math but also enhances their confidence to tackle complex concepts in later grades.

Additionally, when parents engage with their children in learning base ten, they foster a positive attitude towards math, making it a fun and essential part of daily life. Whether through interactive games or practical applications (like dealing with money), parents and teachers can ensure that students develop a strong numerical sense. Ultimately, a solid knowledge of 1.NBT.C prepares students for advanced arithmetic, paving the way for success in mathematics in their future academic and personal lives.