8th Grade Math Challenge

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A quick math quiz for class 8.

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Jatin Kumar Maggon

India

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8th Grade Math Challenge


8th Grade Math ChallengeVersión en línea A quick math quiz for class 8. por Jatin Kumar Maggon 1 What is 3/4 of 160? a 100 b 140 c 40 d 120 2 What is the greatest common divisor of 28 and 36? a 6 b 4 c 9 d 7 3 Convert 0.625 to a fraction. a 3/5 b 625/1000 c 5/8 d 7/8 4 What is the value of x if 2x - 4 = 10? a 6 b 3 c 7 d 8 5 The area of a rectangle is 72 cm² with length 12 cm. What is the width? a 12 cm b 9 cm c 6 cm d 3 cm 6 If a car travels 60 km in 1 hour 15 minutes, average speed is? a 48 km/h b 72 km/h c 60 km/h d 30 km/h 7 Which is not the Pythagorean triple? a 8, 15, 17 b 6, 8, 10 c 4, 5, 6 d 5, 12, 13 8 What is the value of 9^0? a 9 b -1 c 0 d 1 9 If the ratio is 3:5 and the sum is 32, what is the first part? a 9 b 12 c 20 d 15 10 Solve for x: 2x + 5 = 17 a x = 5 b x = 6 c x = 7 d x = 8 11 If a triangle has angles 40° and 60°, the third angle is a 120° b 40° c 80° d 60° 12 Area of a rectangle with length 7 and width 4 is a 28 b 32 c 24 d 11 13 Simplify: 3^2 × 3^3 a 3^5 b 6^2 c 9^3 d 3^6 14 Which is equivalent to 25%? a 2.5 b 0.025 c 0.25 d 25 15 What is the perimeter of a square with side 9? a 18 b 45 c 36 d 81 16 In a proportion a/b = c/d, if a=2, b=5, find c/d when equal a 2/5 b 4/5 c 5/2 d 2/3 17 The probability of rolling an even number on a fair die is a 1/3 b 1/4 c 2/3 d 1/2 18 If a circle has radius 5, its circumference is a 10π b 25π c 5π d 2π 19 Which number is a prime? a 21 b 7 c 1 d 15 20 The ratio 3:4 is equivalent to a 0.75 b 1.0 c 1.25 d 0.5 21 In a data set, the mean of [2,4,6,8] is a 4 b 5 c 6 d 7 22 Which is the greatest common divisor of 18 and 24? a 6 b 18 c 12 d 24 23 If x > 0, the square root of x^2 equals a -x b x^2 c x d 1/x 24 The area of a triangle with base 10 and height 5 is a 15 b 10 c 25 d 50 25 Which expression expands (a + b)^2? a a^2 + b^2 b a^2 - 2ab + b^2 c a^2 + 2ab + b^2 d 2a^2 + b^2

8th Grade Math Challenge

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8th Grade Math ChallengeVersión en línea

por Jatin Kumar Maggon

What is 3/4 of 160?

What is the greatest common divisor of 28 and 36?

Convert 0.625 to a fraction.

What is the value of x if 2x - 4 = 10?

The area of a rectangle is 72 cm² with length 12 cm. What is the width?

If a car travels 60 km in 1 hour 15 minutes, average speed is?

Which is not the Pythagorean triple?

What is the value of 9^0?

If the ratio is 3:5 and the sum is 32, what is the first part?

Solve for x: 2x + 5 = 17

If a triangle has angles 40° and 60°, the third angle is

Area of a rectangle with length 7 and width 4 is

Simplify: 3^2 × 3^3

Which is equivalent to 25%?

What is the perimeter of a square with side 9?

In a proportion a/b = c/d, if a=2, b=5, find c/d when equal

The probability of rolling an even number on a fair die is

If a circle has radius 5, its circumference is

Which number is a prime?

The ratio 3:4 is equivalent to

In a data set, the mean of [2,4,6,8] is

Which is the greatest common divisor of 18 and 24?

If x > 0, the square root of x^2 equals

The area of a triangle with base 10 and height 5 is

Which expression expands (a + b)^2?