Multiplication (Arrays, fact families and facts)

Front

What is multiplication?

Back

Multiplication is a mathematical operation where a number is added to itself a certain number of times. For example, 3 x 4 means adding 3 four times: 3 + 3 + 3 + 3 = 12.

Tags

CCSS.3.OA.A.1

Front

What does an array represent in multiplication?

Back

An array is a visual representation of multiplication. It shows objects arranged in rows and columns. For example, a 3 x 4 array has 3 rows and 4 columns.

Tags

CCSS.3.OA.A.1

Front

What is a multiplication sentence?

Back

A multiplication sentence is a mathematical statement that shows the multiplication of two numbers. For example, 5 x 3 = 15.

Tags

CCSS.3.OA.A.1

Front

What is a fact family?

Back

A fact family is a group of related addition and subtraction or multiplication and division facts that use the same numbers. For example, for the numbers 2, 3, and 6, the fact family is: 2 + 3 = 5, 3 + 2 = 5, 5 - 2 = 3, 5 - 3 = 2.

Tags

CCSS.4.NBT.B.6

Front

What is the product in multiplication?

Back

The product is the result of multiplying two or more numbers together. For example, in 4 x 5 = 20, 20 is the product.

Tags

CCSS.3.OA.A.1

Front

How do you write a multiplication sentence for an array with 5 rows and 5 columns?

Back

You write it as 5 x 5 = 25.

Tags

CCSS.3.OA.A.1

Front

What is the difference between rows and columns in an array?

Back

Rows go horizontally (side to side), while columns go vertically (up and down).

Tags

CCSS.3.OA.A.1

Front

What is the multiplication sentence for an array with 5 rows and 4 columns?

Back

The multiplication sentence is 5 x 4 = 20.

Tags

CCSS.3.OA.A.1

Front

What is the relationship between multiplication and division?

Back

Multiplication and division are inverse operations. For example, if 4 x 5 = 20, then 20 ÷ 5 = 4.

Tags

CCSS.4.NBT.B.6

Front

What does it mean to complete a fact family?

Back

Completing a fact family means writing all the related addition and subtraction or multiplication and division sentences using the same numbers.

Tags

CCSS.2.OA.C.4