Math CBA November 2024

A factory packs 1,655 lightbulbs into boxes. Each box holds 45 lightbulbs. How many boxes does the factory use?

Answer explanation

To find the number of boxes, divide the total lightbulbs by the capacity of each box: 1655 ÷ 45 = 36.78. Since you can't have a fraction of a box, round up to 37.

Hunter earned a total of $276 at a fundraiser selling baked goods. He sold 54 chocolate chip cookies at $2 each. He sold 42 cupcakes. Each cupcake was sold at the same price. Hunter wrote the equation below to find c, the amount of money in dollars he earned. How much did he earn for each cupcake he sold?

• $10

• $4

• $273

• $6

Answer explanation

Hunter earned $276 total. He made $108 from 54 cookies ($2 each). The remaining $168 came from 42 cupcakes. Dividing $168 by 42 gives $4 per cupcake, which is the correct answer.

Shayla ran 4 laps around the track. The total distance she ran was 0.92 miles. How many miles was each lap she ran?

• 0.23

• 36.8

• 2.3

• 3.68

Answer explanation

To find the distance of each lap, divide the total distance by the number of laps: 0.92 miles ÷ 4 laps = 0.23 miles per lap. Thus, each lap Shayla ran was 0.23 miles.

Which equation is represented by the model? Susan created this strip diagram to represent a problem.

• 2.4 × 4 = 0.6

• 2.4 ÷ 4 = 0.6

• 2.4 × 0.6 = 4

• Not here

Answer explanation

The strip diagram indicates that 2.4 is being divided into 4 equal parts, resulting in 0.6 for each part. Thus, the correct equation is 2.4 ÷ 4 = 0.6.

The art teacher had 42 boxes of markers. Each box had 8 markers. She took all the markers out of the boxes and put them into 12 bag for her students. Which equation can be used to find m, the number of markers in each bag?

• 42+8+12=m

• 8x12÷42=m

• 42x8÷12=m

• 8x42-12=m

Answer explanation

To find the number of markers in each bag, first calculate the total markers: 42 boxes x 8 markers/box = 336 markers. Then, divide by the number of bags: 336 markers ÷ 12 bags = m. The equation is 42x8÷12=m.

An expression is shown.

9.12÷12

What is the quotient?

Answer explanation

To find the quotient of 9.12 ÷ 12, divide 9.12 by 12, which equals 0.76.

Julie is planning a birthday party for her husband. She needs a lot of chairs for people to sit. She already has 6 chairs. She is going to the store to buy 16 sets of chairs. Each set of chairs comes with 4 chairs.

Julie wants to create an equation to represent s, the total number of chairs she will have for her husband's birthday party. Complete the equation by selection the correct operators from the drop down box.

s = 6 _ (16 x 4)

• ÷

• -

• x

• +

Answer explanation

To find the total number of chairs, we add the 6 chairs Julie already has to the number of chairs she will buy. Since she buys 16 sets of 4 chairs each, the equation is s = 6 + (16 x 4). Thus, the correct operator is +.

A baker's recipe uses 12 ounces of flower for each loaf of bread. If he has 1,232 ounces of flower, how many full loaves of bread can he make?

Answer explanation

To find the number of loaves, divide the total flour by the flour needed per loaf: 1232 ounces ÷ 12 ounces/loaf = 102.67. Since only full loaves count, the answer is 102 full loaves.

A bag of oranges costs $6.40 including tax. There are 16 oranges in each bag. What is the cost of one orange?

Answer explanation

To find the cost of one orange, divide the total cost of the bag by the number of oranges: $6.40 ÷ 16 = $0.40. Therefore, the cost of one orange is $0.40.

A cafeteria has 432 seats set in rows. Each row has 7 seats.

Use compatible numbers to estimate the number of rows that are in the cafeteria.

432÷7≈

Answer explanation

To estimate 432 ÷ 7, we can round 7 to 10 for easier calculation. 432 ÷ 10 = 43.2, which suggests there are about 43 rows.