Fluently adds and subtracts within 1,000.

Solves multi-step word problems using addition and subtraction.

Adds up to 4-digits with regrouping.

Subtracts up to 4-digits with regrouping.

Children develop these skills at different times. You can find worksheets on this page to encourage each stage of development!

Third graders will continue to improve their addition and subtraction skills using regrouping. Students will learn to check their subtraction by using addition and will solve multi-step word problems and show their work.

Engage your third grader in simple math computations at the supermarket. For instance, ask, "How much money will I need to purchase two lemons?" In the kitchen, your child could easily double a favorite cookie recipe using addition or multiplication.

Addition Practice Worksheet 9A and 9B - Students will practice adding three 2-digit numbers with regrouping.

Turtle Math Secret Code - Solve addition problems correctly to break the secret code and learn an interesting fact about turtles!

Math Squares: Worksheets 1 and 2 - Add the numbers in the squares across and down to find sums to 100.

Addition Practice Worksheet 8 - Adding two 3-digit numbers with some regrouping.

Addition Practice Worksheet 10 - The addition problems on this worksheet include adding three 3-digit numbers with some regrouping and sums to 1,500.

Addition Worksheet 7 - Addition practice worksheet features the addition of two 3-digit numbers with no carrying.

Addition Word Problems: Worksheet 11 - Students will show their work when they solve the addition word problems on this worksheet.

Christmas Addition with Regrouping - Students will gain valuable practice adding two 3-digit numbers with regrouping.

Halloween Mystery Math: Worksheet 3 - This Halloween worksheet makes addition fun! First, students will find the sum for each problem. Then they will match the sum to a letter from the key to reveal the mystery message.

Thanksgiving Addition: Worksheet 12 - Students will add three 3-digit numbers with sums to 1,000 and regrouping.

Subtraction Practice 1 - Students will practice subtracting a 1-digit number from a 2-digit number with regrouping.

Subtraction Practice 2 - Subtracting a 1-digit number from a 2-digit number with regrouping (borrowing).

Subtraction Practice 3 - Solve the subtraction problems with minuends between 21 and 29 and subtrahends between 11 and 29.

Subtraction Practice 4 - Subtracting a 2-digit number from a 2-digit number with regrouping. Minuends 31-39 and subtrahends 11-29.

Subtraction Practice: Three Digits A - Great worksheet for students just beginning to work with a 3-digit minuend and a 3-digit subtrahend. No regrouping.

Subtraction Practice: Three Digits B - Regrouping is required when finding the differences on this subtraction worksheet.

Word Problems: Worksheet 3 - Students will show their work then they add and subtract to solve these word problems.

Problem Solving: Worksheet 1 - Students will solve addition and subtraction word problems.

July 4th Add and Subtract - This set includes the same secret code answer but has two levels of addition and subtraction from which to choose.

Number Detective: Worksheet 3 - Students will add and subtract to find the unknown number for each statement.

Alien Math Maze: Worksheet 3 - Find the sum or difference and help the alien get to the spaceship.

Math Pyramid: Worksheet B - Students will use their addition and subtraction skills to find sums to 1,000.

Math Pyramid: Worksheet C - Add and subtract within 1,000 to solve the math pyramids.

Add or Subtract 1 - Mixed addition and subtraction within 100. Regrouping is required.

Add or Subtract 2 - Practice adding three 2-digit numbers and subtracting a 3-digit number from a 3-digit number. Requires some regrouping.

Halloween Add or Subtract - This Halloween themed worksheet provides your students with mixed addition and subtraction practice with some regrouping.