Why mix all four operations on one page?

Because single-operation pages let kids stop reading the signs. Mixing forces the check-the-sign habit, which is where most careless errors actually come from.

How many problems does a 3rd grade sheet have?

Twenty fact-level problems drawn from the 0 to 12 range, in a fresh mix every time you print.

3rd grade mixed operations review

3rd grade mixed operations review worksheets

Mixed operations worksheets shuffle addition, subtraction, multiplication, and division facts onto one page, so third graders can't coast on a single operation. The real skill is reading the sign first: twenty fact-level problems where the operation changes line to line.

Free printable PDF worksheet, aligned to Common Core 3.OA.C.7.

Each print is a different sheet with its own answer key. You don't need to sign up.

The kind of problems you'll get

Calculate each result. Use the space below each problem for your work.

10 + 2
Answer: 12
9 + 0
Answer: 9
15 − 12
Answer: 3

Every print pulls a fresh set of problems at this level, so a make-up test or a second sibling never gets the same sheet.

What's on a 3rd grade sheet

The sample sheet above has 25 problems. Its answers run from 0 to 118.

Mixed operations review: fluency practice. Calculate each result. Use the space below each problem for your work. 25 problems per page.
Mixed operations review: mad-minute grid. Calculate each result. Use the space below each problem for your work. 25 problems per page.

Every version prints on US Letter or A4, with its answer key after the problems.

How to teach this

Start with a sign hunt: have your child circle every × and ÷ on the page before solving anything. Work for accuracy first and let speed come later. If one operation keeps missing, drill that one alone for a day, then return to the mixed page.

Watch for: Kids see two numbers and add out of habit. Point at the sign and name the operation before starting each problem. Kids treat division facts as brand-new learning. Every division fact is a multiplication fact turned around, so 42 ÷ 7 comes straight from 7 × 6.

Common questions about 3rd grade mixed operations review

Why mix all four operations on one page?: Because single-operation pages let kids stop reading the signs. Mixing forces the check-the-sign habit, which is where most careless errors actually come from.
How many problems does a 3rd grade sheet have?: Twenty fact-level problems drawn from the 0 to 12 range, in a fresh mix every time you print.

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Aligned to Common Core 3.OA.C.7. Reviewed by the One more sheet team. Content version 240, updated October 2026.

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