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3rd Grade Addition Within 100 Worksheets and Printables
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Addition within 100
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Add one 2-digit and two 1-digit numbers - Shark
Level
Grade
3rd Grade
Topic
Addition
Add one 2-digit and two 1-digit numbers - Shark
In this addition worksheet, students add a 2-digit and two 1-digit numbers in their heads. It’s great mental math practice that helps build number sense and confidence with multi-step addition. Worksheet instructions: Find the sum for each problem below.
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Add one 2-digit and two 1-digit numbers - Fish
Level
Grade
3rd Grade
Topic
Addition
Add one 2-digit and two 1-digit numbers - Fish
In this worksheet, students add one 2-digit and two 1-digit numbers in their heads. It’s great mental math practice that helps build number sense and confidence with multi-step addition. Worksheet instructions: Find the sum for each problem below.
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Adding to complete one hundred (missing addend) - Gamer
Level
Grade
3rd Grade
Topic
Addition
Adding to complete one hundred (missing addend) - Gamer
In this addition worksheet, students "complete the hundred" by finding the missing addend in addition equations where the sum is 100. Students are encouraged to solve these exercises mentally, without writing down intermediate steps. Worksheet instructions: Find the missing number in each equation.
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Adding to complete one hundred (missing addend) - Gaming
Level
Grade
3rd Grade
Topic
Addition
Adding to complete one hundred (missing addend) - Gaming
In this worksheet, students "complete the hundred" by finding the missing addend in addition equations where the sum is 100. Students are encouraged to solve these exercises mentally, without writing down intermediate steps, to build number sense and fluency. Worksheet instructions: Find the missing number in each equation.
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Add 1 & 2-digit numbers (with missing addend) - Guitar
Level
Grade
3rd Grade
Topic
Addition
Add 1 & 2-digit numbers (with missing addend) - Guitar
In this addition worksheet, students practice finding missing addends in problems that combine a 2-digit number with a 1-digit number. The goal is to build fluency and confidence in mental math by solving these problems quickly and accurately. Worksheet instructions: Find the missing number in each equation.
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Add 1 & 2-digit numbers (with missing addend) - Headphone
Level
Grade
3rd Grade
Topic
Addition
Add 1 & 2-digit numbers (with missing addend) - Headphone
In this worksheet, students practice finding missing addends in addition problems that combine a 2-digit number with a 1-digit number. The goal is to build fluency and confidence in mental math by solving these problems quickly and accurately. Worksheet instructions: Find the missing number in each equation.
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Add a 2-digit number and a 1-digit number (missing addend) - Donut
Level
Grade
3rd Grade
Topic
Addition
Add a 2-digit number and a 1-digit number (missing addend) - Donut
In this addition worksheet, students practice finding missing numbers in equations with sums up to 100. This worksheet helps reinforce basic addition skills and boosts mental math abilities. Worksheet instructions: Find the missing number in each problem below (no regrouping needed).
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Add a 2-digit number and a 1-digit number (missing addend) - Strawberry
Level
Grade
3rd Grade
Topic
Addition
Add a 2-digit number and a 1-digit number (missing addend) - Strawberry
In this addition worksheet, students practice finding missing numbers in equations with sums up to 100. This worksheet helps reinforce basic addition skills and boosts mental math abilities. Worksheet instructions: Find the missing number in each problem below (no regrouping needed).
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Find the number to complete the next ten - Search
Level
Grade
3rd Grade
Topic
Addition
Find the number to complete the next ten - Search
In this addition worksheet students practice addition within 100 by finding missing numbers in equations. It reinforces number relationships and place value. Worksheet instructions: Find the missing number in each problem.
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Find the number to complete the next ten - Look
Level
Grade
3rd Grade
Topic
Addition
Find the number to complete the next ten - Look
This addition worksheet helps students practice addition within 100 by finding missing numbers in equations. It reinforces number relationships and place value. Worksheet instructions: Find the missing number in each problem.
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Add 2-digit and 1-digit numbers (with carrying) - Lynx
Level
Grade
3rd Grade
Topic
Addition
Add 2-digit and 1-digit numbers (with carrying) - Lynx
This addition worksheet helps students practice adding 2-digit and 1-digit numbers within 100 (with carrying). Designed to improve mental math skills, it encourages kids to solve problems quickly and accurately through repeated practice. Worksheet instructions: Find the sum for each problem.
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Add 2-digit and 1-digit numbers (with carrying) - Goat
Level
Grade
3rd Grade
Topic
Addition
Add 2-digit and 1-digit numbers (with carrying) - Goat
This addition worksheet helps students practice adding 2-digit and 1-digit numbers (with carrying). Designed to improve mental math skills, it encourages kids to solve problems quickly and accurately through repeated practice. Worksheet instructions: Find the sum for each problem.
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Add 2-digit and 1-digit numbers (with carrying) - Tiger
Level
Grade
3rd Grade
Topic
Addition
Add 2-digit and 1-digit numbers (with carrying) - Tiger
This mental math worksheet helps students practice adding 2-digit and 1-digit numbers with carrying. Designed to improve mental math skills, it encourages kids to solve problems quickly and accurately through repeated practice. Worksheet instructions: Find the sum for each problem.
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Add 2-digit and 1-digit numbers (with carrying) - Reindeer
Level
Grade
3rd Grade
Topic
Addition
Add 2-digit and 1-digit numbers (with carrying) - Reindeer
This addition worksheet helps students practice adding 2-digit and 1-digit numbers with carrying. Designed to improve mental math skills, it encourages kids to solve problems quickly and accurately through repeated practice. Worksheet instructions: Find the sum for each problem.
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Addition word problems - Beach
Level
Grade
3rd Grade
Topic
Addition
Addition word problems - Beach
This word problems worksheet focuses on simple addition. Students are presented with real-life situations where they need to calculate the answers to word problems using addition. Worksheet Instructions: Read each problem carefully, then write your answers in the space provided.
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Addition word problems - Picnic
Level
Grade
3rd Grade
Topic
Addition
Addition word problems - Picnic
This worksheet focuses on simple addition word problems. Students need to focus on solving real-life situations using addition. Worksheet Instructions: Read each problem carefully, then write your answers in the space provided.
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Addition word problems - Cookies
Level
Grade
3rd Grade
Topic
Addition
Addition word problems - Cookies
This word problems worksheet focuses on simple addition. Students need to focus on solving real-life situations using addition. Worksheet Instructions: Read each problem carefully, then write your answers in the space provided.
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Add 2-digit numbers (sum under 100) - Bunny
Level
Grade
3rd Grade
Topic
Addition
Add 2-digit numbers (sum under 100) - Bunny
Worksheet instructions: Find the missing numbers in each circle by adding the given numbers. If you find it easy, try to figure out the answers mentally (without writing down the intermediary steps).
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Add 2-digit numbers (sum under 100) - Grapes
Level
Grade
3rd Grade
Topic
Addition
Add 2-digit numbers (sum under 100) - Grapes
Worksheet instructions: Find the missing numbers in each circle by adding the given numbers. If you find it easy, try to figure out the answers mentally (without writing down the intermediary steps).
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Add or subtract within 100 (whole tens) - Snail
Level
Grade
3rd Grade
Topic
Subtraction
Add or subtract within 100 (whole tens) - Snail
Worksheet instructions: Add or subtract to find the missing number for each problem.
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Add or subtract within 100 (no borrowing) - Flamingo
Level
Grade
3rd Grade
Topic
Subtraction
Add or subtract within 100 (no borrowing) - Flamingo
Worksheet instructions: Find the missing number for each problem. If both boxes are empty, fill in both numbers.
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Add or subtract within 100 (no borrowing) - Guitar
Level
Grade
3rd Grade
Topic
Subtraction
Add or subtract within 100 (no borrowing) - Guitar
Worksheet instructions: Find the missing number for each problem. If both boxes are empty, fill in both numbers.
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Add or subtract within 100 (no borrowing) - Kite
Level
Grade
3rd Grade
Topic
Subtraction
Add or subtract within 100 (no borrowing) - Kite
Worksheet instructions: Find the missing number for each problem. If both boxes are empty, fill in both numbers.
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Add or subtract within 100 (no borrowing) - Sand Castle
Level
Grade
3rd Grade
Topic
Subtraction
Add or subtract within 100 (no borrowing) - Sand Castle
Worksheet instructions: Find the missing number for each problem. If both boxes are empty, fill in both numbers.
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Add or subtract within 100 (no borrowing) - Beach Chair
Level
Grade
3rd Grade
Topic
Subtraction
Add or subtract within 100 (no borrowing) - Beach Chair
Worksheet instructions: Find the missing number for each problem. If both boxes are empty, fill in both numbers.
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