Array Models Quiz 1

Kai is organizing his bookshelf and decides to arrange his 12 books into rows for a neat look. If he wants to create a pattern using 3 x 4, how should he arrange the books?

• In 3 rows with 4 books each

• In 4 rows with 3 books each

• In 2 rows with 6 books each

• In 6 rows with 2 books each

Answer explanation

The correct choice is an array with 3 rows and 4 columns, representing the multiplication fact 3 x 4.

Tags

CCSS.2.OA.C.4

Riyu has 2 boxes of crayons, and each box contains 5 crayons. How many crayons does Riyu have in total?

• 7

• 10

• 12

• 15

Answer explanation

Using an array model, 2 groups of 5 items each equals 10. Therefore, 2 \times 5 = 10.

Tags

CCSS.2.OA.C.4

Sora has 7 shelves of books in her library, and each shelf contains 2 books. Which array model correctly represents the number of books in Sora's library?

• An array with 7 rows and 2 columns

• An array with 2 rows and 7 columns

• An array with 3 rows and 5 columns

• Both A and B

Answer explanation

The correct array model for the multiplication fact 7 x 2 is an array with 7 rows and 2 columns, as well as an array with 2 rows and 7 columns. Both A and B represent the multiplication correctly.

Tags

CCSS.2.OA.C.4

Riyu and Sora are creating a garden bed with flowers arranged in rows and columns. If they arrange the garden with 4 rows and 5 columns, which multiplication fact does it represent?

• Both A and B

Answer explanation

The array model with 4 rows and 5 columns represents both 4 times 5 and 5 times 4, so the correct answer is Both A and B.

Tags

CCSS.3.OA.A.1

Dareth has 6 rows of orange trees in his garden, and each row contains 3 orange trees. How many orange trees are there in total in Dareth's garden?

• 18

• 20

• 15

• 24

Answer explanation

Using an array model, we can represent 6 as 6 groups of 3. Counting all the groups gives us 18, which is the result of the multiplication fact 6 x 3.

Tags

CCSS.2.OA.C.4

Nya is organizing her comic book collection and decides to arrange her comics in 9 rows with 2 columns each. How many comics in total will be on the shelf?

• 11

• 18

• 20

• 22

Answer explanation

To find the total objects, multiply the number of rows by the number of columns: 9 rows * 2 columns = 18 total objects. Therefore, the correct answer is 18.

Tags

CCSS.2.OA.C.4

Dareth has a small garden where he plants flowers in rows. If he plants 3 rows with 8 flowers in each row, how many flowers does he have in total?

• Both A and B

Answer explanation

The correct multiplication fact represented by an array with 3 rows and 8 columns is both 3 times 8 and 8 times 3, so the answer is Both A and B.

Tags

CCSS.3.OA.A.3

Riyu has 5 baskets of apples with 4 apples in each basket. How many apples does he have in total?

• 9

• 19

• 20

• 25

Answer explanation

To find the total number of oranges, multiply the number of rows (5) by the number of oranges in each row (4), which equals 20. Therefore, you have 20 oranges in total.

Tags

CCSS.2.OA.C.4

Nya has 8 boxes of crayons, and each box contains 2 crayons. How many crayons does Nya have in total?

• 16

• 18

• 10

• 20

Answer explanation

Using an array model, 8 can be represented as 8 groups of 2. Multiplying these groups gives 16 as the product, making the correct answer choice 16.

Tags

CCSS.2.OA.C.4

Dareth has a small garden where he plants flowers in 6 columns and 3 rows. What multiplication fact does this represent?

• Both A and B

Answer explanation

The correct multiplication fact represented by an array with 6 columns and 3 rows is 6 times 3, which is equivalent to 3 times 6. Therefore, the correct answer is both A and B.

Tags

CCSS.3.OA.A.1