3rd Grade OST Math FREE Sample Practice Questions

Preparing your student for the 3rd Grade OST Math test? To succeed on the OST Math test, students need to practice as many real OST Math questions as possible.  There’s nothing like working on OST Math sample questions to measure your student’s exam readiness and put him/her more at ease when taking the 3rd Grade OST Math test. The sample math questions you’ll find here are brief samples designed to give students the insights they need to be as prepared as possible for their 3rd Grade OST Math test.

Check out our sample 3rd Grade OST Math practice questions to find out what areas your student needs to practice more before taking the 3rd Grade OST Math test!

Start preparing your student for the 2026 OST Math test with our free sample practice questions. Also, make sure to follow some of the related links at the bottom of this post to get a better idea of what kind of mathematics questions students need to practice.

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4- What is the value of “A” in the following equation?
\(21 + A + 9 = 44\)

A. 10

B. 12

C. 14

D. 20

5- Mr. smith usually eats four meals a day. How many meals does he eat in a week?

A. 21

B. 24

C. 28

D. 30

6- What is the value of A in the equation \(72 ÷ A = 8\)

A. 2

B. 6

C. 7

D. 9

7- Use the models below to answer the question.
\(\)
Which statement about the models is true?

A. Each shows the same fraction because they are the same size.

B. Each shows a different fraction because they are different shapes.

C. Each shows the same fraction because they both have 3 sections shaded.

D. Each shows a different fraction because they both have 3 shaded sections but a different number of total sections.

8- To what number is the arrow pointing?
\(\)

A. 36

B. 38

C. 40

D. 42

9- Emily has 108 stickers and she wants to give them to nine of her closest friends. If she gives them all an equal number of stickers, how many stickers will each of Emily’s friends receive?___________

10- The following models are the same size and each is divided into equal parts.
The models can be used to write two fractions.
\(\)
Based on the models, which of the following statements is true?

A. \(\frac{2}{8}\) is bigger than \(\frac{4}{16}\).

B. \(\frac{2}{8}\) is smaller than \(\frac{4}{16}\).

C. \(\frac{2}{8}\) is equal to \(\frac{4}{16}\).

D. We cannot compare these two fractions only by using the models.

Best 3rd Grade OST Math Prep Resource for 2026

Answers:

2- D
\(14 × 40 = 560\)

3- C
24,589 is the sum of \(20,000; 4,000; 500; 80;\) and 9

4- C
\(A = 44 – (21 + 9)\)
\(A = 14\)

5- C
In 1 day 4 meals so \(4 × 7 = 28\) meals a week.

6- D
\(A = 72 ÷ 8\)
\(A= 9 \)

7- D
the model for the first fraction is divided into 6 equal parts. We shade 3_6 to show the same amount as 1_2. The model for the second fraction is divided into 8 equal parts. We shade 3_ 8 that it shows these two models are different fractions.

8- C
The arrow shows exactly the middle of two numbers 35 and 45, so the answer is 40

9- 12
\(108 ÷ 9 = 12\)

10- C
the model for the first fraction is divided into 8 equal parts. We shade 2_ 8 to show the same amount as 1_ 4. The model for the second fraction is divided into 16 equal parts. We shade 4_ 16 to show the same amount as 1_ 4.

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Recommended EffortlessMath Books

For a workbook your child can use alongside these sample questions, Mastering Grade 3 Math covers every Ohio grade 3 topic with worked examples. For extra word-problem practice (where most third-graders lose points), see Mastering Grade 3 Math Word Problems.

Frequently Asked Questions

Is there an OST 3rd grade math practice test?

Yes. Ohio’s Department of Education and Workforce offers free online practice tests for the Ohio State Tests, built in the same platform students use in spring. Pair one of those with this short sample set: your child gets used to drag-and-drop and typed answers, and you see which grade 3 skills, like division within 100 or fractions on a number line, need another look.

What is on the OST 3rd grade test?

Third graders in Ohio take Ohio State Tests in English language arts and math. The math test covers multiplication and division within 100, fractions as numbers on a number line, area and perimeter, place value, time and measurement, and word problems. Items include multiple choice, multi-select, drag-and-drop and short typed answers, and no calculator is used at grade 3.

What is a good OST 3rd grade math score?

Ohio reports five performance levels: Limited, Basic, Proficient, Accelerated and Advanced. Proficient, which starts at a scaled score of 700, is the on-grade-level target, and Accelerated or Advanced means your child is working above grade level. If the score lands in Basic or Limited, look at the reporting categories on the score report to see which math areas pulled it down.

Does the OST 3rd grade test include reading?

Yes. Ohio third graders take a separate English language arts test in addition to math, and the reading result is the one tied to Ohio’s Third Grade Reading Guarantee. Math scores are not part of that promotion decision, but they still guide classroom support. Practice both, keeping math sessions short and focused on multiplication facts and word problems.

Related EffortlessMath Lessons

If a topic on this page feels rusty, these short lessons go deeper:

• How to multiply and divide
• How to add and subtract multi-digit numbers
• How to compare fractions
• How to find the area of a rectangle
• How to solve word problems