Arrays

Front

What is an array in mathematics?

Back

An array is a systematic arrangement of objects, usually in rows and columns, that helps in visualizing and solving problems involving multiplication and addition.

Tags

CCSS.3.OA.A.1

Front

How can repeated addition be represented in an array?

Back

Repeated addition can be represented in an array by adding the number of items in each row or column multiple times.

Tags

CCSS.2.OA.C.4

Front

What is the formula for finding the total number of items in a rectangular array?

Back

The total number of items in a rectangular array can be found using the formula: Total = Number of Rows × Number of Columns.

Tags

CCSS.3.OA.A.1

Front

If an array has 4 rows and 5 columns, what is the total number of items?

Back

The total number of items is 4 × 5 = 20.

Tags

CCSS.3.OA.A.1

Front

What does the term 'rows' refer to in an array?

Back

Rows refer to the horizontal lines of items in an array.

Tags

CCSS.2.OA.C.4

Front

What does the term 'columns' refer to in an array?

Back

Columns refer to the vertical lines of items in an array.

Tags

CCSS.2.OA.C.4

Front

How can you express the total number of items in an array using multiplication?

Back

You can express the total number of items in an array using multiplication by multiplying the number of rows by the number of columns.

Tags

CCSS.3.OA.A.1

Front

What is the repeated addition sentence for an array with 3 rows of 4?

Back

The repeated addition sentence is 4 + 4 + 4 = 12.

Tags

CCSS.2.OA.C.4

Front

How do you determine the number of columns in an array?

Back

The number of columns in an array is determined by counting the vertical groups of items.

Tags

CCSS.2.OA.C.4

Front

What is the repeated addition sentence for an array with 5 rows of 3?

Back

The repeated addition sentence is 3 + 3 + 3 + 3 + 3 = 15.

Tags

CCSS.2.OA.C.4