Grade 3 Math Practice Test: Mixed Review
- Mixed Review
- 10 questions
- 12 minutes
This 10-question review mixes the main Grade 3 skills: operations, rounding, area and perimeter, elapsed time and fractions. Tip: read each word problem twice and decide which operation it needs before you calculate.
Tap an option to mark your answer. You can change your mind, or tap the same option again to leave the question blank. The correct answers and explanations appear when you finish the test.Tap an option to answer; tap it again to leave the question blank.
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Question 1
What is 507 − 249?
Correct answer: D
Regroup: 507 − 249 = 258. Check: 258 + 249 = 507. 342 comes from subtracting the smaller digit from the larger digit in each place.
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Question 2
What is 8 × 7?
Correct answer: B
8 × 7 = 56. 63 is 9 × 7 and 15 is 8 + 7.
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Question 3
What is 72 ÷ 9?
Correct answer: B
Think 9 × ☐ = 72. Since 9 × 8 = 72, the quotient is 8. 63 is 72 − 9.
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Question 4
What is 745 rounded to the nearest hundred?
Correct answer: C
Look at the tens digit: it is 4, so 745 rounds down to 700. 750 is 745 rounded to the nearest ten.
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Question 5
A rectangle is 6 centimeters long and 4 centimeters wide. What is its area?
Correct answer: B
Area = length × width = 6 × 4 = 24 square centimeters. 20 is the perimeter in centimeters, not the area.
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Question 6
A square has sides that are 5 inches long. What is its perimeter?
Correct answer: A
A square has 4 equal sides: 5 + 5 + 5 + 5 = 20 inches. 25 is 5 × 5, the area in square inches.
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Question 7
A movie starts at 2:45 p.m. It lasts 1 hour 30 minutes. What time does it end?
Correct answer: A
One hour after 2:45 is 3:45, and 30 more minutes is 4:15 p.m. 4:45 p.m. adds 2 hours instead of 1 hour 30 minutes.
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Question 8
Which fraction is greater than 38?
Correct answer: C
All the fractions have eighths, so compare the top numbers: 5 is more than 3, so 5/8 > 3/8. 3/8 is equal, not greater.
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Question 9
Jen buys 3 packs of juice boxes. Each pack has 6 juice boxes. Her family drinks 5 of them. How many juice boxes are left?
Correct answer: A
First multiply: 3 × 6 = 18 juice boxes. Then subtract: 18 − 5 = 13. 18 forgets the second step.
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Question 10
What number goes in the box?
4 × 9 = 9 × ☐
Correct answer: D
You can multiply in any order (commutative property), so 4 × 9 = 9 × 4. 36 is the product, not the missing factor.
Questions you leave blank are not counted as wrong.
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