# McGraw Hill My Math Grade 3 Chapter 8 Lesson 6 Answer Key Divide by 8 and 9

All the solutions provided in McGraw Hill Math Grade 3 Answer Key PDF Chapter 8 Lesson 6 Divide by 8 and 9 will give you a clear idea of the concepts.

## McGraw-Hill My Math Grade 3 Answer Key Chapter 8 Lesson 6 Divide by 8 and 9

Math in My World

Example 1
Kyra and 8 of her friends made 63 paper airplanes. They will each take home an equal number. How many paper airplanes will each take home?
Find 63 ÷ 9.
One Way Use counters.
Partition 63 counters into 9 equal groups. Draw the equal groups.
There are ____ counters in each group.
My drawing shows that 63 ÷ 9 = ____.
Another Way Use repeated subtraction.
Use repeated subtraction to find 63 ÷ 9, or . Each friend will take home ____ airplanes.

Given that,
Kyra and 8 of her friends made 63 paper airplanes.
So, 63 ÷ 8 = 7.
There are 7 counters in each group. Each friend will take home 7 airplanes.

Example 2
Every time 8 people came through the gate at the sea otter exhibit, a bell rang. How many times did the bell ring if 32 people came through the gate?
Find 32 ÷ 8 = . ← unknown
Draw an array and use the inverse operation of division to find the unknown.

Given that,
Every time 8 people came through the gate at the sea otter exhibit, a bell rang.
The total number of people are 32.
So, 32 ÷ 8 = 4.
The inverse operation is 4 x 8 = 32.
The array of 4 x 8 is Division can be thought of as a missing factor problem. The missing factor is ____.
So, 32 ÷ 8 = ____ and ____ × 8 = 32
The bell rang ____ times

The missing factor is 4.
So, 32 ÷ 8 = 4 and 4 × 8 = 32
Therefore the bell rang 4 times.

Guided Practice

Use counters to find how many are in each group.

Question 1.
40 counters
5 equal groups
____ in each group
So, 40 ÷ 5 = ____.
Given that,
40 counters and 5 equal groups.
So, 40 ÷ 5 = 8.
Therefore there are 8 in each group.

Question 2.
54 counters
9 equal groups
____ in each group
So, 54 ÷ 9 = ____
Given that,
54 counters and 9 equal groups.
So, 54 ÷ 9 = 6.
Therefore there are 6 in each group.

Talk Math The multiplication facts is helped to check the division.
12 x 2 = 24.
24 ÷ 12 = 2.

Question 3.
Use repeated subtraction to find 48 ÷ 8. The repeated subtraction of 48 ÷ 8 is Independent Practice

Use counters to find the number of equal groups or the number in each group.

Question 4.
36 counters 9 equal groups
____ in each group
So, 36 ÷ 9 = ____
Given that,
36 counters 9 equal groups.
So, 36 ÷ 9 = 4.
Therefore there are 4 in each group.

Question 5.
45 counters
____ equal groups 5 in each group
So, 45 ÷ ____ = 5.
Given that,
45 counters and 5 in each group.
So, 45 ÷ 5 = 9.
Therefore there are 5 equal groups.

Question 6.
56 counters 8 equal groups
____ in each group
So, 56 ÷ 8 = ____.
Given that,
56 counters 8 equal groups.
So, 56 ÷ 8 = 7.
Therefore there are 7 in each group.

Question 7.
Use repeated subtraction to divide. 64 divided by 8 equal to 64.
64 ÷ 8 = 8.
The repeated subtraction of 64 ÷ 8 is Algebra Use the inverse operation to find each unknown. Draw an array.

Question 8.
40 ÷ 8 = ?
5 ÷ = 40
? = ____ = ____
40 divided by 8 equal to 5.
40 ÷ 8 = 5.
Multiplication of 5 with 8 then you get 40.
5 x 8 = 40.
? = 5.
The unknown is 8
The array of 5 x 8 is Question 9.
27 ÷ 9 = ?
3 × = 27
? = ____ = ____
27 divided by 9 equal to 3.
27 ÷ 9 = 3.
Multiplication of 3 with 9 then you get 27.
3 x 9 = 27.
? = 3.
Unknown = 9.
The array of 3 x 9 is Question 10.
48 ÷ 8 = ?
6 × = 48
? = ____ = ____
48 divided by 8 equal to 6.
48 ÷ 8 = 6.
Multiplication of 6 with 8 then you get 48.
6 x 8 = 48.
? = 6.
The unknown is 8.
The array of 6 x 8 is Problem Solving

Algebra For Exercises 11-13, write a division sentence with a symbol for the unknown. Then solve.

Question 11.
Each art project uses 9 tiles. There are 81 tiles. How many art projects can be made?
Given that,
Each art project uses 9 tiles
The total number of tiles are 81.
So, 81 ÷ 9 = 9.
Therefore there are 9 art projects can be made.

Question 12.
Forty-eight students visited the petting zoo. The students were divided evenly into eight groups. How many students were in each group?
Given that,
The total number of students visited the petting zoo is 48.
The students were divided evenly into eight groups.
So, 48 ÷ 8 = 6.
Therefore there are 6 students in each group.

Question 13.
Amy traveled 72 miles by bike along the coast in 9 days. She traveled the same number of miles each day. How many miles did Amy travel each day?
Given that,
Amy traveled 72 miles by bike in 9 days.
She traveled the same number of miles each day.
So, 72 ÷ 9 = 8.
Therefore Amy travelled 8 miles in each day.

Question 14.
Mathematical PRACTICE 1 Keep Trying One baseball game has 9 innings. If 36 out of the 54 innings for the season have been played, how many games remain?
One baseball game has 9 innings.
If 36 out of the 54 innings for the season have been played.
So, 54 ÷ 9 = 6.
36 ÷ 9 = 4.
6 – 4 = 2.
Therefore the number of games remain are 2.

HOT Problems

Question 15.
Mathematical PRACTICE 2 Use Number Sense Write 2 numbers that cannot be divided evenly by 8 or 9.
That 2 numbers are 5, 7.
5 is not divided by 8 or 9.
7 is not divided by 8 or 9.

Question 16.
? Building on the Essential Question Explain how finding a quotient can be thought of as an unknown, or missing, factor problem.
Finding a quotient can be a unknown.
For example 12 ÷ 6 = 2.
2 is the quotient.
Here 2 is the unknown.

### McGraw Hill My Math Grade 3 Chapter 8 Lesson 6 My Homework Answer Key

Practice

Use counters to find the number of equal groups or the number in each group.

Question 1.
27 counters 9 equal groups
____ in each group
So, 27 ÷ 9 = ____.
Given that
27 counters 9 equal groups.
So, 27 ÷ 9 = 3.
Therefore there are 3 in each group.

Question 2.
54 counters
____ equal groups 6 in each group
So, 54 ÷ ___ = 6.
Given that,
54 counters and 6 in each group.
So, 54 ÷ 6 = 9.
Therefore there are 9 equal groups.

Question 3.
32 counters 8 equal groups
____ in each group
So, 32 ÷ 8 = _____
Given that,
32 counters 8 equal groups
So, 32 ÷ 8 = 4.
Therefore there are 4 in each group.

Question 4.
Use repeated subtraction to divide.
63 ÷ 9 = ____
The repeated subtraction to divide 63 ÷ 9 is So, 63 ÷ 9 = 7.

Algebra Use the inverse operation to find each unknown.

Question 5.
16 ÷ 8 =  × 8 = 16 = ____
16 divided by 8 equal to 2.
16 ÷ 8 = 2.
Multiplication of 2 with 8 then you get 16.
2 x 8 = 16.
The unknown is 2.

Question 6. ÷ 9 = 4
4 × 9 =  = ____
36 divided by 9 equal to 4.
36 ÷ 9 = 4.
Multiplication of 4 with 9 then you get 36.
4 x 9 = 36.
The unknown is 36.

Question 7.
64 ÷ 8 =  × 8 = 64 = ____
64 divided by 8 equal to 8.
64 ÷ 8 = 8.
Multiplication of 8 with 8 then you get 64.
8 x 8 = 64.
The unknown is 8.

Problem Solving

Mathematical PRACTICE 2 Use Algebra For Exercises 8 and 9, write a division sentence with a symbol for the unknown. Then solve.

Question 8.
Michael, the chef, has 18 pineapple slices to divide evenly among 9 fruit cups. How many pineapple slices will he put in each cup?
Given that,
Michael, the chef, has 18 pineapple slices to 9 fruit cups.
So, 18 ÷ 9 = 2.
Therefore there are 2 pineapple slices will he put in each cup.

Question 9.
Kayla counted 40 chairs in the auditorium. There were 8 chairs in each row. How many rows of chairs were there?
Given that,
Kayla counted 40 chairs in the auditorium
The each row has 8 chairs.
So, 40 ÷ 8 = 5.
Therefore there are 5 rows of chairs are there.

Question 10.
Simon sold 72 packages of popcorn for the fundraiser. There are 9 packages in each box. If he has delivered 27 packages, how many boxes does Simon have left to deliver?
Given that,
The total number of popcorn packages are 72.
There are 9 packages in each box.
If he has delivered 27 packages.
The number of boxes are 72 ÷ 9 = 8.
So, 27 ÷ 9 = 3.
Therefore Simon delivered 3 boxes.
So, 8 – 3 = 5.
Therefore Simon left to deliver 5 boxes.

Test Practice

Question 11.
Which number sentence uses the inverse operation to find the unknown in the division sentence 81 ÷ 9 = ?
A. 90 – 9 = 81
B. 72 + 9 = 81
C. 8 × 9 = 72
D. 9 × 9 = 81