Understanding Arrays in Multiplication

Which multiplication sentence is shown by the array

• 3x12=36

• 3x2=6

• 3x10=30

• 2x6=12

Answer explanation

The array shows 3 rows with 12 items in each row, which represents the multiplication 3x12. This equals 36, confirming that 3x12=36 is the correct multiplication sentence.

Tags

CCSS.3.OA.A.1

What is the array representing?

• 3 x 5

• 3 + 5

• 5 x 3

• 5 - 3

Answer explanation

The array represents a multiplication of 3 and 5, which is correctly expressed as 3 x 5. This indicates a total of 15, aligning with the concept of arrays in mathematics.

Tags

CCSS.3.OA.A.1

Larry has 14 oranges. He will cut each of these oranges into 7 slices. Which array can be used to find the number of orange slices he will have?

• A

• B

• C

• D

Answer explanation

To find the total number of orange slices, multiply the number of oranges (14) by the number of slices per orange (7). The array that represents this operation is 14 x 7, which corresponds to choice A.

Tags

CCSS.2.OA.C.4

Which equation matches this array?

• 4 x 7 = 28

• 6 x 4 = 24

• 4 x 8 = 32

• 3 x 7 = 27

Answer explanation

The array represents 4 groups of 7, which equals 28. Therefore, the correct equation is 4 x 7 = 28.

Tags

CCSS.3.OA.A.1

and what is the answer?

• 3 x 6 = 30

• 6 x 3 = 15

• 4 x 3 = 12

• 3 x 6 = 18

Answer explanation

The correct answer is 3 x 6 = 18, as multiplying 3 by 6 gives 18. The other options are incorrect calculations.

Tags

CCSS.3.OA.A.1

Mrs. Williams plants 2 rows of 5 carrots. Which representation shows the array for Mrs. Williams carrots?

• 
• 
• 
• 

Tags

CCSS.2.OA.C.4

• ``` O O O O O O O O O O O O ```

• ``` O O O O O O O O O O O O ```

• ``` O O O O O O O O ```

Answer explanation

The multiplication 3 x 4 equals 12. The correct array representation has 3 rows and 4 columns, which corresponds to the choice with four 'O's in each of the three rows.

Tags

CCSS.3.OA.A.1

If you have an array with 2 rows and 5 columns, what multiplication equation does it represent?

Tags

CCSS.3.OA.A.1

• ``` O O O O O O O O O O O O ```

• ``` O O O O O O O O O O O O ```

• ``` O O O O O O O O O ```

Tags

CCSS.3.OA.A.1

How many total objects are there in an array with 3 rows and 6 columns?

• 18

• 9

• 12

Tags

CCSS.2.OA.C.4