3rd Grade OST Math Practice Test Questions
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
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.
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