10 Most Common 3rd Grade OST Math Questions
Preparing 3rd-grade students for the 3rd Grade OST Math test? Want a preview of the most common mathematics questions on the 3rd Grade OST Math test? If so, then you are in the right place.
The mathematics section of 3rd Grade OST can be a challenging area for some students, but with enough patience, it can be easy and even enjoyable!
Sometimes, preparing students for the 3rd Grade OST Math test can be a nerve-wracking experience. Learning more about what your student is going to see when he/she take the 3rd Grade OST can help you measure your student’s exam readiness. Here’s a chance to review the 10 most common 3rd Grade OST Math questions to help your students know what to expect and what to practice most. Let your students try these 10 most common 3rd Grade OST Math questions to hone their mathematical skills and to see if their math skills are up to date on what’s being asked on the exam, or if they still need more practice.
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 your students need to practice.
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Classroom A contains \(8\) rows of chairs with \(4\) chairs per row. If classroom B has three times as many chairs, which number sentence can be used to find the number of chairs in classroom B?
\(8 × 4 + 3\)
\(8 + 4 × 3\)
\(8 × 4 × 3\)
\(8 + 4 + 3\)
Show answer and explanation
C
\(3\) times of \(8\) rows of chairs with \(4\) chairs per day are: \(3 × 8 × 4\)
A cafeteria menu had spaghetti with meatballs for \($8\) and bean soup for \($6\). How much would it cost to buy three plates of spaghetti with meatballs and three bowls of bean soup? __________
Show answer and explanation
42
\(3\) spaghetti with meatballs cost: \($3 × $8 = $24\)
\(3\) bowls of bean soup cost: \(3 × $6 = $18\)
\(3\) spaghetti with meatballs \(+\) \(3\) bowls of bean soup cost: \($24 + $ 18 = $42\)
There are \(7\) days a week. There are \(24\) hours in a day. How many hours are in a week?
\(48\)
\(96\)
\(168\)
\(200\)
Show answer and explanation
C
\(1\) day: \(24\) hours so \(7\) days \(= 7 × 24 = 168\) hours
Emily described a number using these clues:
Three-digit odd numbers that have a \(6\) in the hundreds place and a \(3\) in the tens place
\(627\)
\(637\)
\(632\)
\(636\)
Show answer and explanation
B
Three-digit odd numbers that have a \(6\) in the hundreds place and a \(3\) in the tens place is \(637. 632\) and \(636\) are even numbers.
This clock shows a time after \(12:00\) PM. What time was it \(1\) hour and \(30\) minutes ago?
\(12:45\) PM
\(1:45\) PM
\(1:15\) PM
\(12:15\) PM
Show answer and explanation
A
Subtract hours: \(14– 1 = 13\)
Subtract the minutes: \(15 – 30 = – 15\)
The minutes are less than \(0\), so:
• Add \(60\) to minutes ( \(-15 +60 =45\) minutes)
• Subtract \(1\) from hours \((13 – 1 =12)\)
Olivia has \(84\) pastilles. She wants to put them in boxes of \(4\) pastilles. How many boxes does she need?
\(20\)
\(21\)
\(24\)
\(28\)
Show answer and explanation
B
Olivia wants to divide \(84\) pastilles into boxes of \(4\) pastilles, so \(84 ÷ 4 = 21\) is the number of boxes.
A football team is buying new uniforms. Each uniform costs \($20\). The team wants to buy \(11\) uniforms.
Which equation represents a way to find the total cost of the uniforms?
\((20 × 10) + (1 × 11) = 200 + 11\)
\((20 × 10) + (10 × 1) = 200 + 10\)
\((20 × 10) + (20 × 1) = 200 + 20\)
\((11 × 10) + (10 × 20) = 110 + 200\)
Show answer and explanation
C
The football team should buy \(11\) uniforms that each uniform cost \($20\) so they should pay\((11×$20) $220\).
Therefore, choice C is the correct answer:
\((20 × 10) + (20 × 1) = 20(10+1) =20×11=220\)
There are \(92\) students from Lexington Elementary school at the library on Tuesday. The other \(54\) students in the school are practicing in the classroom. Which number sentence shows the total number of students in Riddle Elementary School?
\(92 + 54\)
\(92 -54\)
\(92 × 54\)
\(92 ÷54\)
Show answer and explanation
A
Add \(92\) and \(54\) students to know the whole number of students.
Use the picture below to answer the question.
Which fraction shows the shaded part of this square?
\(\frac{92}{100}\)
\(\frac{92}{10}\)
\(\frac{90}{100}\)
\(\frac{8}{100}\)
Show answer and explanation
A
The model for the fraction is divided into \(100\) equal parts. We shade \(92\) parts of these \(100\) parts that it’s equal to \(\frac{92}{100}\)
Which number correctly completes the number sentence \(90 × 25 =\) ?
\(225\)
\(900\)
\(1250\)
\(2250\)
Show answer and explanation
D
\(90 × 25 =2,250\)
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