3.NBT.A Worksheets, Workbooks, Lesson Plans, and Games

Improve those skills! Practice three-digit addition with these twelve problems.

Students will practice adding up to 50 while building their logic and problem solving skills with these math puzzle boxes.

Looking for a worksheet to help your kid with number rounding skills? This printable will help him with third grade math skills.

In this practice worksheet, students solve 15 three-digit subtraction problems with regrouping.

Use this resource to support your students as they analyze word problems involving addition and subtraction. Focus on their process, and then allow them to solve to find the answer.

Put learners' addition abilities to the test with mathematical puzzle boxes. They'll practice their addition as they solve each puzzle.

Adding big numbers can be tricky, but this lesson introduces your students to a strategy that makes it less intimidating! Using the place value strategy will make the task less daunting.

Start your students on subtracting three-digit numbers with this lesson that breaks the problems down by place values!

It's rounding time. Help young mathematicians learn to round to the nearest ten and hundred with this teacher-approved lesson.

One million is a hard number for young children to grasp. This lesson will help students understand how large of a number one million is and what is represents.

Expand on your students' knowledge of base ten numbers with this lesson that introduces the students to the place and value of digits within a number.

Help your students understand rounding without rhymes or tricks. Students will use an open number line to round and then take part in a fun game that will get them moving around the room.

Improve your pattern-recognition and estimation skills as you practice multiplication and division. Children use techniques like breaking down numbers and fast addition to arrive at the correct answer — and to understand the concepts behind the proc

Brush up on addition and subtraction with these math worksheets that will challenge your third grader.

Scale math heights using this workbook that's based on real measurements of U.S. geography. Kids rely on charts and data provided to answer word problems.