Exploring Arrays and Area Model Multiplication

What is an array?

• A number arranged in a single line.

• A number arranged into even rows and columns.

• A number arranged in a circle.

• A number arranged randomly.

Tags

CCSS.3.OA.A.1

Which of the following is NOT an array?

• A number arranged into uneven rows and columns.

• A number arranged into even rows and columns.

• A number arranged into a single row.

• A number arranged into even rows and columns but with missing elements.

How can arrays help in solving multiplication problems?

• By arranging numbers in even rows and columns.

• By arranging numbers in a circle.

• By arranging numbers in a single line.

• By arranging numbers randomly.

Tags

CCSS.3.OA.A.1

What does 6 * 5 represent in an array?

• Six groups of five.

• Five groups of six.

• Six groups of ten.

• Five groups of ten.

Tags

CCSS.3.OA.A.1

What is an open array?

• An array arranged randomly.

• An array arranged in a circle.

• An array without visible square or round tiles.

• An array with visible square or round tiles.

Tags

CCSS.4.NBT.B.5

How can you decompose a 12 * 5 array to make it easier to solve?

• By splitting it into 5 * 5 and 7 * 5.

• By splitting it into 12 * 2 and 12 * 3.

• By splitting it into 10 * 5 and 2 * 5.

• By splitting it into 6 * 5 and 6 * 5.

Tags

CCSS.4.NBT.B.5

What is the result of 12 * 5 when decomposed into two 6 * 5 arrays?

• 90

• 60

• 30

• 120

Tags

CCSS.4.NBT.B.5

How can you decompose a 12 * 15 array to make it easier to solve?

• By splitting it into 6 * 10, 6 * 5, 6 * 10, and 6 * 5.

• By splitting it into 10 * 15 and 2 * 15.

• By splitting it into 6 * 15 and 6 * 15.

• By splitting it into 12 * 10 and 12 * 5.

Tags

CCSS.4.NBT.B.5

What is the result of 12 * 15 when decomposed into four smaller arrays?

• 120

• 150

• 180

• 210

Tags

CCSS.3.OA.A.1

How do you draw an open array for 12 * 6?

• By drawing 6 rows of 12 tiles each.

• By drawing the area with the tiles and using clues to solve.

• By drawing 12 rows of 6 tiles each.

• By drawing the area without the tiles and using clues to solve.

Tags

CCSS.4.NBT.B.5