We included **HMH Into Math Grade 4 Answer Key**** PDF** **Module 9 Apply Multiplication to Area **to make students experts in learning maths.

## HMH Into Math Grade 4 Module 9 Answer Key Apply Multiplication to Area

**What are some possible rectangles?**

Kai is using a 64 foot rope to outline an area for a vegetable garden. Label the four rectangles with possible lengths and widths so that each rectangle has a perimeter of 64 feet.

Answer:

â€¢ What is the sum of the length and width of each of your rectangles?

_______________________

Answer:

The sum of the length and width of each of your rectangles is 32 ft.

**Turn and Talk**

- What is the longest length that you could use if the measurements are only in whole feet? Explain.
- How did you decide the lengths and widths of the rectangles.

Answer:

The longest length that you could use if the measurements are only in whole feet is 22 feet

Length is the horizontal distance and Width is the vertical distance which is perpendicular to length.

**Are You Ready?**

**Complete these problems to review prior concepts and skills you will need for this module.**

**Explore Area**

**Count the unit squares to find the area of the figure.**

Question 1.

The area of the figure is ___ square units.

Answer:

There are 6 unit squares.

Therefore, The area of the figure is 6 square units.

Question 2.

The area of the figure is ___ square units.

Answer:

There are 13 square units.

Therefore, The area of the figure is 13 square units.

**Multiplication Facts**

**Use multiplication to solve the problem.**

Question 3.

Mitch has 7 bags of marbles. Each bag contains 5 marbles. How many marbles does Mitch have?

Mitch has __ marbles.

Answer:

Given,

Mitch has 7 bags of marbles.

Each bag contains 5 marbles.

So, Number of marbles = Number of bags x Number of marbles in each bag

n = 7 x 5 = 35

Therefore, there are 35 marbles.

Question 4.

Mrs. Gonzalez receives 6 flowers from each of 9 students. How many flowers does Mrs. Gonzalez have?

Mrs. Gonzalez has ___ flowers.

Answer:

Given,

Mrs. Gonzalez receives 6 flowers from each of 9 students.

Number of flowers = Number of students x Number of flowers from each student

n = 9 x 6 = 54

Therefore, Mrs. Gonzalez has 54 flowers.

**Meaning of Multiplication: Arrays**

**Complete.**

Question 5.

___ rows of ___ = ___

Answer:

From the figure,

4 rows of 7

= 4 x 7 = 28.

Question 6.

___ rows of ___ = ____

Answer:

From the figure,

3 rows of 6

= 3 x 6 = 18.