Math Skills Quiz

If a rectangle has a length of 8 cm and a width of 3 cm, what is the area of the rectangle?

• 11 cm²

• 24 cm²

• 25 cm²

• 26 cm²

Answer explanation

To find the area of a rectangle, multiply the length by the width. In this case, 8 cm * 3 cm = 24 cm². Therefore, the correct answer is 24 cm².

Tags

CCSS.4.MD.A.3

CCSS.3.MD.C.7B

• 7

• 5

• 11

• 3

Answer explanation

To solve the equation, add 5 to both sides to isolate x. This gives 3x = 21. Then divide by 3 to find x = 7. Therefore, the correct answer is 7.

Tags

CCSS.7.EE.B.4A

What is the next number in the sequence: 2, 4, 8, 16, ?

• 18

• 20

• 32

• 24

Answer explanation

The next number in the sequence is obtained by multiplying each number by 2. Therefore, 16 * 2 = 32, so the next number is 32.

Tags

CCSS.3.OA.D.9

A pie chart shows that 25% of a school's students took part in a math competition. If there are 800 students in the school, how many students participated in the competition?

• 100

• 200

• 300

• 400

Answer explanation

25% of 800 students is 200 students, so 200 students participated in the math competition.

Tags

CCSS.6.RP.A.3C

If the ratio of cats to dogs in a pet store is 3:4, and there are 12 cats, how many dogs are there?

• 12

• 14

• 16

• 18

Answer explanation

Since the ratio of cats to dogs is 3:4, for every 3 cats, there are 4 dogs. With 12 cats, there would be 16 dogs (12 cats * 4 dogs/3 cats = 16 dogs). Therefore, the correct answer is 16.

• 7

• -7

• Both A and B

• None of the above

Answer explanation

The value of x can be both 7 and -7 because both 7^2 and (-7)^2 equal 49.

Tags

CCSS.8.EE.A.2

A triangle has angles measuring 35° and 65°. What is the measure of the third angle?

• 70°

• 80°

• 90°

• 100°

Answer explanation

The sum of the angles in a triangle is always 180°. Therefore, the measure of the third angle is 180° - 35° - 65° = 80°. Hence, the correct answer is 80°.

Tags

CCSS.8.G.A.5

• 2

• 3

• 4

• 5

Answer explanation

To find the value of x, subtract 3 from both sides of the equation: 5x = 15. Then, divide by 5 to get x = 3. Therefore, the correct value of x is 3.

Tags

CCSS.7.EE.B.4A

Calculate the perimeter of a square with a side length of 6 cm.

• 18 cm

• 24 cm

• 30 cm

• 36 cm

Answer explanation

To calculate the perimeter of a square, multiply the side length by 4. Therefore, 6 cm x 4 = 24 cm. Hence, the correct answer is 24 cm.

Tags

CCSS.4.MD.A.3

What is the median of the following set of numbers: 3, 8, 9, 15, 22?

• 8

• 9

• 15

• 22

Answer explanation

The median is the middle number when the numbers are arranged in ascending order. In this case, the median is 9 as it is the middle number in the set: 3, 8, 9, 15, 22.

Tags

CCSS.6.SP.B.5C