5th Grade Math Quiz with Explanations
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1 What is the sum of 375 and 428?
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803
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808
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8031
Correct!Wrong!Explanation
To find the sum, simply add the numbers together:
375 + 428 = 808. -
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2 Solve: 6 × 9 = ?
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54
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63
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45
Correct!Wrong!Explanation
Multiplication: 6 × 9 = 54. Multiplying 6 by 9 gives 54.
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3 What is the value of 3²?
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3
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6
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9
Correct!Wrong!Explanation
3² means "3 squared," which means 3 × 3 = 9.
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4 If a triangle has a base of 5 cm and a height of 8 cm, what is its area?
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13 cm²
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20 cm²
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40 cm²
Correct!Wrong!Explanation
The area of a triangle is calculated using the formula:
Area = (base × height) ÷ 2.
(5 × 8) ÷ 2 = 40 ÷ 2 = 20 cm². -
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5 What is 1/4 of 100?
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50
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25
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75
Correct!Wrong!Explanation
To find 1/4 of 100, divide 100 by 4:
100 ÷ 4 = 25. -
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6 What is the perimeter of a rectangle with a length of 12 cm and a width of 5 cm?
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34 cm
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40 cm
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30 cm
Correct!Wrong!Explanation
The perimeter of a rectangle is calculated using the formula:
Perimeter = 2 × (length + width).
2 × (12 + 5) = 2 × 17 = 34 cm. -
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7 Which number is a multiple of both 4 and 6?
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12
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14
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18
Correct!Wrong!Explanation
The least common multiple (LCM) of 4 and 6 is 12. This is the smallest number that both 4 and 6 divide into evenly.
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8 Solve the equation: 2x + 6 = 18. What is x?
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5
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6
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12
Correct!Wrong!Explanation
To solve for x:
2x + 6 = 18
First, subtract 6 from both sides:
2x = 18 - 6
2x = 12
Now, divide both sides by 2:
x = 12 ÷ 2
x = 6. -
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9 What is the decimal equivalent of 3/10?
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0.03
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0.3
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0.30
Correct!Wrong!Explanation
3/10 is the same as 0.3 in decimal form. The fraction 3/10 means "three parts out of ten," which equals 0.3.
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10 How many degrees are in a right angle?
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45°
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60°
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90°
Correct!Wrong!Explanation
A right angle always measures 90°. It's the angle formed by two perpendicular lines.
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