3rd Grade Math Worksheets and Activities | Page 5

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).

In this worksheet, students practice adding two single-digit numbers to find the sum. This worksheet helps build fluency in basic addition and strengthens mental math skills. Worksheet instructions: Find the sum for each problem below.

In this math worksheet, students practice adding two single-digit numbers to find the sum. This worksheet helps build fluency in basic addition and strengthens mental math skills. Worksheet instructions: Find the sum for each problem below.

In this addition worksheet, students practice adding two single-digit numbers to find the sum. This worksheet helps build fluency in basic addition and strengthens mental math skills. Worksheet instructions: Find the sum for each problem below.

In this addition worksheet students practice finding missing addends in equations with sums up to 20. This worksheet strengthens mental math and basic addition skills. Worksheet instructions: Find the missing number in each equation.

This worksheet helps students practice finding missing addends in equations with sums up to 20. It strengthens mental math and basic addition skills. Worksheet instructions: Find the missing number in each equation.

This math worksheet helps students practice finding missing addends in equations with sums up to 20, strengthening mental math and basic addition skills. Worksheet instructions: Find the missing number in each equation.

This addition worksheet helps students practice finding missing addends in equations with sums up to 20, strengthening mental math & basic addition skills. Worksheet instructions: Find the missing number in each equation.

This worksheet helps students practice finding missing addends in equations with sums up to 20, strengthening mental math & basic addition skills. Worksheet instructions: Find the missing number in each equation.

This whole tens addition worksheet (with missing number) helps students practice completing equations with three two-digit numbers that are multiples of ten, reinforcing their mental math skills and place value understanding. Worksheet instructions: Find the missing number in each equation.

This addition (whole tens) worksheet helps students practice completing equations with three two-digit numbers that are multiples of ten, reinforcing their mental math skills and place value understanding. Worksheet instructions: Find the missing number in each equation.

This whole tens addition worksheet helps students practice adding three two-digit numbers that are multiples of ten, strengthening their mental math skills and understanding of place value. Worksheet instructions: Find the sum for each problem

This worksheet helps students practice adding three two-digit numbers that are multiples of ten, building fluency in mental math and place value. Worksheet instructions: Find the sum for each problem

This addition worksheet helps students practice adding three two-digit numbers that are multiples of ten, building fluency in mental math and place value. Worksheet instructions: Find the sum for each problem

This worksheet helps students practice finding missing addends in equations with sums up to 10, strengthening mental math & basic addition skills. Worksheet instructions: Each equation has a missing number. Fill in the blank with the correct number so that the sum equals the given total.

This basic addition worksheet helps students practice finding missing addends in equations with sums up to 10, strengthening mental math and basic addition skills. Worksheet instructions: Each equation has a missing number. Fill in the blank with the correct number so that the sum equals the given total.

This worksheet helps students practice finding missing addends in equations with sums up to 10, strengthening mental math and basic addition skills. Worksheet instructions: Each equation has a missing number. Fill in the blank with the correct number so that the sum equals the given total.

This math worksheet helps students practice finding missing addends in equations with sums up to 10, strengthening mental math and basic addition skills. Worksheet instructions: Each equation has a missing number. Fill in the blank with the correct number so that the sum equals the given total.

This addition worksheet helps students practice finding missing addends in equations with sums up to 10, strengthening mental math and basic addition skills. Worksheet instructions: Each equation has a missing number. Fill in the blank with the correct number so that the sum equals the given total.

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.

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.

This math worksheet helps students practice adding two 2-digit numbers without carrying or regrouping. It reinforces place value concepts, including tens and ones, to build a solid foundation for mastering addition. Worksheet instructions:

This worksheet helps students practice adding two 2-digit numbers without carrying or regrouping. It reinforces place value concepts, including tens and ones, to build a solid foundation for mastering addition. Worksheet instructions:

This addition worksheet helps students practice adding two 2-digit numbers without carrying or regrouping. It reinforces place value concepts, including tens and ones, to build a solid foundation for mastering addition. Worksheet instructions:

This rounding numbers worksheet helps students practice rounding numbers to the nearest 10 or 100. It is designed to strengthen number sense and place value skills. Worksheet instructions: Round each number to the nearest 10 or 100, depending on the underlined digit. For example: 5,642 rounded to the nearest 100 is 5,600.