Grade 3 Mixed Operations Practice
All four operations on a single grade 3 page, so the first job is spotting which sign is in front of you. Twenty problems with a complete answer key.
Check the sign in each problem before you work. All four operations appear on this page.
- 1.262 + 86 =
- 2.650 − 104 =
- 3.8 × 10 =
- 4.10 ÷ 2 =
- 5.449 + 27 =
- 6.152 − 30 =
- 7.9 × 2 =
- 8.60 ÷ 10 =
- 9.457 + 67 =
- 10.838 − 825 =
- 11.8 × 5 =
- 12.70 ÷ 7 =
- 13.421 + 445 =
- 14.171 − 21 =
- 15.2 × 9 =
- 16.8 ÷ 2 =
- 17.424 + 390 =
- 18.535 − 45 =
- 19.8 × 3 =
- 20.40 ÷ 5 =
What this worksheet covers
This is a 20-problem sheet — one page to work through, one page of answers to check against. What makes this set particular: six of the ten straight computations require regrouping and the rest do not, so the two cases are mixed rather than blocked together; numbers reach 838. Grade 3, Operations & Algebraic Thinking, Common Core 3.OA.7: that is the exact slot this page fills.
Skills practiced
At this point in the sequence, work in mixed operations is really about all four operations, and choosing among them. Concretely, the page tests whether a student can carry or borrow across place-value columns without losing a digit. Watch how the answers are reached, not just whether they land — the method is what carries into grade 4.
How to use this worksheet
By grade 3 a student should be able to take all twenty problems in one sitting. Time it loosely — if the page takes more than about fifteen minutes, the underlying facts are probably not automatic yet, and that is worth fixing before more mixed operations practice piles on top. Print a second copy before writing on the first; a sheet worked twice a week apart tells you far more than a sheet worked once.
One mistake to watch for
Division before multiplication regardless of position: 24 ÷ 4 × 2 is answered as 3.
PEMDAS is being read as six ordered steps, putting multiplication ahead of division.
Teach the four-level hierarchy with multiplication and division sharing a level, evaluated left to right, and drill it on expressions where the difference shows.
Related worksheets
Also aligned to 3.OA.7
The same standard from a different angle. Worth reaching for when the skill needs another pass without repeating the identical page.
- Grade 3 Multiplication Practice — grade 3, 20 problems
A step either side
Where this skill comes from and where it goes next. Drop back a grade when the page stalls; move up when it does not.
- Grade 2 Mixed Addition and Subtraction Within 100 — grade 2, 20 problems
- Grade 4 Two-Step Mixed Operations — grade 4, 18 problems
No sign-up and no paywall — download the mixed operations sheet, print it, and the answers for all twenty problems are on the page behind it.