3rd Grade OST Math Practice Test Questions

3rd Grade OST Math Practice Test Questions

TL;DR: Got a third grader prepping for the OST Math test in Ohio? These free practice questions cover the topics your child will see on Ohio’s State Test: multiplication and division, fractions, place value, area and perimeter, and word problems. Worked answers are included, so the two of you can sit down together and walk through the reasoning behind any misses step by step rather than just landing on the right answer.

Key takeaways:

  • OST (Ohio’s State Tests) grade 3 Math has about 35-40 questions across two parts.
  • Items include multiple choice, multi-select, drag-and-drop, equation editor, and short answer.
  • No calculator at grade 3.
  • Aligned with Ohio’s Learning Standards (which match Common Core for grade 3 math).
  • Proficient (level 3 of 5) is the on-grade-level mark schools target.

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. 30

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

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Answers:

1- A
\(8000 – 658 = 7342\)

2- D
\(14 × 40 = 560\)

3- D
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 25 and 35, so the answer is 30.

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.

Looking for the best resource to help you succeed on the 3rd Grade OST Math test?

The Best Books to Ace the 3rd Grade OST Math Test

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Recommended EffortlessMath Books

For a workbook your child can use alongside this practice test, Mastering Grade 3 Math walks through every grade 3 topic on the Ohio State Test with worked examples. For extra word-problem practice (heavy on the OST), see Mastering Grade 3 Math Word Problems.

Frequently Asked Questions

What is on the Ohio State Test for 3rd grade math?

Ohio’s 3rd grade math test follows Ohio’s Learning Standards: multiplication and division within 100, fractions on a number line, equivalent fractions, place value, area and perimeter of rectangles, time, measurement and multi-step word problems. Students answer online using multiple choice, multi-select, drag-and-drop and typed responses, and no calculator is used at this grade, so fact fluency really helps.

Is there an Ohio 3rd grade math practice test PDF?

Yes. The Ohio Department of Education and Workforce posts practice tests and sample items for Ohio’s State Tests, and many families print sample questions to work on at the kitchen table. Printable practice is great for showing work on paper, but also try the online practice site so your third grader gets comfortable with drag-and-drop and equation-entry questions.

How are Ohio 3rd grade math test scores reported?

Ohio reports a scale score and one of five performance levels: Limited, Basic, Proficient, Accelerated and Advanced. Proficient is the on-grade-level target most schools aim for. In 3rd grade the reading test carries more weight for promotion, so a lower math score usually leads to extra support rather than holding a child back.

How do I get my child’s Ohio State Test scores?

Your child’s school or district shares the Ohio State Test score report, usually on paper or through the district’s parent portal once results are released after spring testing. If you have not received it, ask the teacher or school office. The report shows the performance level and how your child did in each area, such as operations or fractions.

Is MAP testing required in Ohio?

No, NWEA MAP is not a state requirement in Ohio. The required tests are Ohio’s State Tests, which 3rd graders take in math and English language arts. Many Ohio districts choose MAP or a similar tool for fall, winter and spring check-ins, so your child may take both: MAP to track growth and the state test to measure grade-level mastery.

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