Finding Fractional Parts of Groups

The video tutorial covers Lesson 7.1, focusing on finding fractional parts of a group. It includes practical examples using stamp collections to illustrate the concept. The lesson involves solving problems with Maya's, Mac's, and Susana's stamp collections, using arrays and counters to find fractions. The tutorial also provides a share and show model for visualizing solutions and offers homework examples for practice. A spiral review section revisits previous concepts with a challenging problem, ensuring comprehensive understanding.

What is the main focus of today's lesson?

• Learning about decimals

• Finding a fractional part of a group

• Understanding whole numbers

• Finding the area of a rectangle

Maya has 20 stamps, and 4/5 of them are canceled. How many stamps are canceled?

• 12 stamps

• 8 stamps

• 20 stamps

• 16 stamps

How many equal groups should you arrange 20 counters into to find 4/5?

• 10 groups

• 5 groups

• 4 groups

• 6 groups

Mac has 12 stamps from Canada, and 2/3 have pictures of Queen Elizabeth II. How many stamps have her picture?

• 10 stamps

• 8 stamps

• 6 stamps

• 4 stamps

Why is 4/6 equivalent to 2/3?

• Because 4/6 is a different fraction

• Because 4/6 can be reduced to 2/3

• Because 4/6 is greater than 2/3

• Because 4/6 is less than 2/3

Susana has 16 stamps, and 3/4 are from the United States. How many are from the United States?

• 8 stamps

• 10 stamps

• 12 stamps

• 14 stamps

How many rows are needed to model 7/8 of 16?

• 8 rows

• 6 rows

• 9 rows

• 7 rows

What is 6/10 of 10?

• 6

• 7

• 5

• 4

Rafi had a board 15.5 feet long and cut three pieces each 3 7/8 feet long. How much of the board is left?

• 3 1/2 feet

• 3 5/8 feet

• 4 feet

• 4 1/2 feet