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1st Grade Three-digit Addition Worksheets and Activities

worksheet-Adding-3-numbers-with-missing-addend---Jungle

Adding 3 numbers with missing addend - Jungle

Adding 3 numbers with missing addend - Jungle

Missing addend exercises reinforce the concept of addition and are a great tool for practicing addition facts. In this worksheet, the student needs to find the missing number in each equation. Worksheet instructions: Find the missing number in each problem.

worksheet-Adding-3-numbers-with-missing-addend---Space

Adding 3 numbers with missing addend - Space

Adding 3 numbers with missing addend - Space

Missing addend exercises reinforce the concept of addition and are a great tool for practicing addition facts. In this worksheet, students need to find the missing number in each equation. Worksheet instructions: Find the missing number in each problem.

worksheet-Adding-3-numbers-with-missing-addend---Desert

Adding 3 numbers with missing addend - Desert

Adding 3 numbers with missing addend - Desert

In this worksheet, the student needs to find the missing number in each equation. Missing addend exercises reinforce the concept of addition and are a great tool for practicing addition facts. Worksheet instructions: Find the missing number in each problem.

worksheet-Adding-3-numbers-with-missing-addend---Ocean

Adding 3 numbers with missing addend - Ocean

Adding 3 numbers with missing addend - Ocean

Students need to find the missing number in each equation. Missing addend exercises reinforce the concept of addition and are a great tool for practicing addition facts. Worksheet instructions: Find the missing number in each problem.

worksheet-Adding-3-numbers-with-missing-addend---Picnic

Adding 3 numbers with missing addend - Picnic

Adding 3 numbers with missing addend - Picnic

In this worksheet, students need to find the missing number in each equation. Missing addend exercises reinforce the concept of addition and are a great tool for practicing addition facts. Worksheet instructions: Find the missing number in each problem.

worksheet-Add-two-3-digit-numbers-in-columns---Sun-Shades

Add two 3-digit numbers in columns - Sun Shades

Add two 3-digit numbers in columns - Sun Shades

Worksheet instructions: Find the sum for each addition problem (with regrouping).