Arrays/Repeated Addition

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 multiplication and repeated addition.

Tags

CCSS.4.NBT.B.5

Front

How can repeated addition be represented using an array?

Back

Repeated addition can be represented by adding the number of items in each row of an array. For example, in an array with 4 rows of 2, it can be expressed as 2 + 2 + 2 + 2.

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

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

Back

Columns refer to the vertical arrangements of items in an array, going from top to bottom.

Tags

CCSS.2.OA.C.4

Front

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

Back

Rows refer to the horizontal arrangements of items in an array, going from left to right.

Tags

CCSS.2.OA.C.4

Front

If an array has 3 rows and 4 columns, how many total items are there?

Back

There are 12 total items, calculated as 3 rows × 4 columns = 12.

Tags

CCSS.3.OA.A.3

Front

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

Back

You can express the total number of items by adding the number of items in each row. For example, if there are 5 rows of 3, it can be expressed as 3 + 3 + 3 + 3 + 3 = 15.

Tags

CCSS.2.OA.C.4

Front

What is the relationship between multiplication and repeated addition?

Back

Multiplication is a shortcut for repeated addition. For example, 4 × 3 is the same as 3 + 3 + 3 + 3.

Tags

CCSS.3.OA.A.1

Front

In the context of arrays, what does the term 'rectangular' imply?

Back

'Rectangular' implies that the array has a specific number of rows and columns, forming a rectangle shape.

Tags

CCSS.3.OA.A.1

Front

How would you write a repeated addition sentence for an array with 6 rows of 2?

Back

The repeated addition sentence would be 2 + 2 + 2 + 2 + 2 + 2 = 12.

Tags

CCSS.2.OA.C.4