K-12th Grade Math

Tommy has 3 red apples and 2 green apples. How many apples does Tommy have in total?

• 7

• 5

• 6

• 4

Answer explanation

To find the total number of apples, add the red apples (3) and green apples (2) together. Tommy has 5 apples in total.

Tags

CCSS.2.OA.C.3

Sally has 7 stickers. She gives 3 stickers to her friend Jack. How many stickers does Sally have left?

• 5

• 2

• 6

• 4

Answer explanation

Sally starts with 7 stickers. After giving 3 to Jack, she has 7 - 3 = 4 stickers left. Therefore, Sally has 4 stickers left.

Tags

CCSS.2.OA.A.1

Lily has 24 marbles. She gives 10 marbles to her friend Emily. How many marbles does Lily have now?

• 12

• 16

• 20

• 14

Answer explanation

Lily gave 10 marbles to Emily, so she now has 24 - 10 = 14 marbles left. Therefore, Lily has 14 marbles now.

Tags

CCSS.2.OA.A.1

Amanda has 56 pencils. She gives her friend Lisa 28 pencils. How many pencils does Amanda have left?

• Amanda has 30 pencils left.

• Amanda has 20 pencils left.

• Amanda has 40 pencils left.

• Amanda has 28 pencils left.

Answer explanation

Amanda gave 28 pencils to Lisa, so she has 56 - 28 = 28 pencils left. Therefore, Amanda has 28 pencils left.

Tags

CCSS.2.OA.A.1

There are 365 days in a year. How many days are there in 4 years?

• 1460

• 1825

• 1095

• 365

Answer explanation

There are 365 days in a year, so in 4 years there are 365 * 4 = 1460 days. Therefore, the correct answer is 1460.

Tags

CCSS.4.MD.A.1

If a bookshelf can hold 25 books on each shelf and there are 6 shelves on the bookshelf, how many books can the bookshelf hold in total?

• 150

• 100

• 175

• 200

Answer explanation

To find the total number of books the bookshelf can hold, multiply the number of books per shelf (25) by the number of shelves (6): 25 x 6 = 150. Therefore, the bookshelf can hold 150 books in total.

Tags

CCSS.3.OA.A.3

A rectangle has a length of 12 meters and a width of 8 meters. What is the perimeter of the rectangle?

• 40 meters

• 24 meters

• 32 meters

• 15 meters

Answer explanation

The perimeter of a rectangle is calculated by adding all four sides, which in this case is 12 + 12 + 8 + 8 = 40 meters. Therefore, the correct answer is 40 meters.

Tags

CCSS.4.MD.A.3

If a pizza has a diameter of 14 inches, what is its circumference? (Use π ≈ 3.14)

• 30.24 inches

• 38.75 inches

• 43.96 inches

• 56.52 inches

Answer explanation

To find the circumference of a circle, you use the formula C = πd where d is the diameter. Substituting d = 14 inches and π ≈ 3.14, C = 3.14 * 14 = 43.96 inches. Therefore, the correct answer is 43.96 inches.

Tags

CCSS.7.G.B.4

The price of a shirt is reduced by 20% for a sale. If the original price of the shirt was $40, what is the sale price?

• $32

• $28

• $30

• $36

Answer explanation

To find the sale price, subtract 20% of $40 from the original price. 20% of $40 is $8, so the sale price is $40 - $8 = $32.

Tags

CCSS.6.RP.A.3C

Solve the system of equations:

{2x+3y=11

{3x−2y=4​

• {'x': 2, 'y': 3}

• {'x': 4, 'y': 5}

• {'x': 1, 'y': 2}

• {'x': 3, 'y': 4}

Answer explanation

To solve the system of equations, we can use the method of substitution or elimination. By solving the equations simultaneously, we find x=2 and y=3. Therefore, the correct answer is {'x': 2, 'y': 3}.

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6