Exploring Arrays and Multiplication Concepts

What is an array?

• A type of mathematical operation

• A collection of objects arranged in rows and columns

• A special kind of number

• A drawing tool

Tags

CCSS.2.OA.C.4

How do you write a repeated addition problem using an array?

• By counting the total number of objects only

• By adding the objects in each row or column

• By multiplying the rows and columns

• By adding the number of rows

Tags

CCSS.2.OA.C.4

How do you create an array from a repeated addition problem like 4 + 4 + 4 + 4?

• Draw four groups of one object

• Draw sixteen groups of one object

• Draw four groups of four objects

• Draw one group of sixteen objects

Tags

CCSS.2.OA.C.3

What does an array of 5 + 5 + 5 represent?

• Three groups of five objects

• One group of fifteen objects

• Five groups of three objects

• Fifteen groups of one object

Tags

CCSS.3.OA.B.5

What is the purpose of drawing arrays from repeated addition problems?

• To understand the concept of multiplication

• To make drawing easier

• To improve counting skills

• To prepare for learning division

Tags

CCSS.2.OA.C.4

Can arrays with different objects represent the same repeated addition problem?

• No, arrays cannot represent addition problems

• Yes, but only if they are the same size

• No, the objects must be the same

• Yes, if they have the same number of rows and columns

Tags

CCSS.2.OA.C.4

If an array has three rows of five objects, what is the total number of objects?

• 15

• 5

• 8

• 3

Tags

CCSS.4.NBT.B.5

How can arrays help understand multiplication?

• By showing how to divide numbers

• By arranging objects in a way that represents repeated addition

• By adding all the objects together

• By subtracting rows and columns

Tags

CCSS.3.OA.A.1

What multiplication problem does an array of two rows and five columns represent?

• 2 x 5

• 5 + 2

• 2 + 5

• 5 x 2

Tags

CCSS.4.NBT.B.5

Why are arrays compared to multiplication tables?

• Because they both involve addition

• Because they can both be drawn

• Because they visually represent multiplication

• Because they use the same numbers

Tags

CCSS.4.NBT.B.5