3rd Grade Math Worksheets and Activities

In this addition worksheet, students practice adding three 2-digit whole tens (such as 20 + 30 + 40). This helps strengthen mental math skills, enhances place value understanding, and builds fluency with multi-step addition. Worksheet instructions: Find the sum for each problem.

In this worksheet, students practice adding three 2-digit whole tens (such as 20 + 30 + 40). This helps strengthen mental math skills, enhances place value understanding, and builds fluency with multi-step addition. Worksheet instructions: Find the sum for each problem.

In this worksheet, students practice adding two whole tens and two 1-digit numbers. This exercises helps build mental math fluency, reinforce place value, and improve multi-step problem solving (tip: add the "tens" first, then add the "ones"). Worksheet instructions: Find the sum for each problem below.

In this addition worksheet, students practice adding two whole tens (like 20, 40, 60, etc.) and two 1-digit numbers. This helps build mental math fluency, reinforce place value, and improve multi-step problem solving (tip: add the "tens" first, then add the "ones"). Worksheet instructions: Find the sum for each problem below.

In this worksheet, students find the missing number when a 2-digit number is added to a whole ten (like 10, 20, 30, etc.). All questions have a missing addend. Worksheet instructions: Find the missing number in each equation.

In this addition worksheet, students find the missing number when a 2-digit number is added to a whole ten (like 10, 20, 30, etc.). All questions have a missing addend. Worksheet instructions: Find the missing number in each equation.

In this addition worksheet, students add whole tens (like 10, 20, 30, etc.) to 2-digit numbers. This helps build fluency with mental math and reinforces place value understanding. Worksheet instructions: Find the sum for each problem below.

In this worksheet, students practice adding whole tens (like 10, 20, 30, etc.) to 2-digit numbers. This helps build fluency with mental math, reinforce place value understanding, and strengthen addition skills in a structured way. Worksheet instructions: Find the sum for each problem below.

In this addition worksheet, students add a 1-digit number and a 3-digit number. Some problems involve regrouping. Worksheet instructions: Find the sum for each problem below.

In this worksheet, students add a 1-digit number to a 3-digit number. Some problems involve regrouping, making it great for building fluency and number sense. Worksheet instructions: Find the sum for each problem below.

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.

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.

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.

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.

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.

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.

In this fractions worksheet, students practice recognizing basic fraction models like 1/2 and 1/3 by identifying shapes divided into equal parts. They select the shape that represents the given fraction. Worksheet instructions: Circle the correct shapes in each row.

In this worksheet, students practice recognizing basic fractions like 1/2 and 1/3 by identifying shapes divided into equal parts. They select the shape that represents the given fraction. Worksheet instructions: Circle the correct shapes in each row.

In this fractions worksheet, students practice identifying fractions by matching them to divided shapes. Fractions are most easily understood as "parts of a whole" and students learn to recognize how much of each shape is shaded.

In this worksheet, students practice identifying fractions by matching them to divided shapes. Fractions are most easily understood as "parts of a whole" and students learn to recognize how much of each shape is shaded.

This fractions worksheet reinforces the connection between fractions written in standard form (like "1/2") and their word form ("one half").

This worksheet reinforces the connection between fractions written in standard form (like "1/2") and their word form ("one half").

In this worksheet, students practice matching fractions in standard form (numerator and denominator) with their written word forms. Students learn to recognize that "1/2" is the same as "one half," "3/4" is the same as "three quarters," and so on. Worksheet instructions: Match each fraction to the correct word.

This worksheet helps students practice matching fractions in standard form (numerator and denominator) with their written word forms. Students learn to recognize that "1/2" is the same as "one half," "3/4" is the same as "three quarters," and so on. Worksheet instructions: Match each fraction to the correct word.

In this worksheet, students solve multiplication word problems with single-digit numbers and products less than 30. Some questions ask them to write the multiplication sentence. Instructions: Solve each problem and write the multiplication sentence or answer.