Unit 3 Lesson 18

Front

What is a tape diagram?

Back

A tape diagram is a visual representation used to show the relationship between numbers in a problem. It helps to illustrate how quantities are divided or combined.

Front

How do you find the total number of items when given packages and items per package?

Back

Multiply the number of packages by the number of items in each package. For example, if there are 6 packages with 8 items each, the total is 6 x 8 = 48 items.

Front

What is the equation to find out how many strawberries are left after eating some?

Back

To find out how many strawberries are left, subtract the number of strawberries eaten from the total number picked. For example, if 425 strawberries were picked and 136 + 78 were eaten, the equation is 425 - (136 + 78) = 211.

Front

What does it mean to break apart a factor in multiplication?

Back

Breaking apart a factor means to split it into two smaller factors to make the multiplication easier. For example, 8 can be broken into 4 and 4, so 8 x 9 can be rewritten as (4 x 9) + (4 x 9).

Front

What is the product of 8 x 3?

Back

The product of 8 x 3 is 24.

Front

How can you represent a word problem with a tape diagram?

Back

You can draw a tape diagram to show the total quantity and how it is divided into parts, helping to visualize the problem.

Front

What is the purpose of using arrays in multiplication?

Back

Arrays help visualize multiplication by arranging objects in rows and columns, making it easier to understand the concept of groups.

Front

What is the equation for finding the total number of marbles Anna has?

Back

To find the total number of marbles, add the number of marbles in the bags to the marbles already in the bag. If Anna has 6 bags of 8 marbles and 108 marbles, the equation is (6 x 8) + 108.

Front

What does it mean to solve for an unknown in multiplication?

Back

Solving for an unknown means finding the missing value in a multiplication equation, often by using known values to create new equations.

Front

How do you check your multiplication answer?

Back

You can check your multiplication answer by using division. If you multiply two numbers and get a product, divide the product by one of the factors to see if you get the other factor.