For those who have done the Eureka Math Lesson 1 Homework 4.1 and want to check if you did a great job, this post features the answer key of the lesson. If you have not done your homework, you are encouraged to try first and do not cheat by copying the whole thing featured here. Cheating is never allowed and it is always better to try first even though you have a hard time and your answers are incorrect.
1. Label the place value charts. Fill in the blanks to make the following statements true. Draw disks in the place value chart to show how you got your answer.
a. 10 x 4 ones = 40 ones = 40 or 4 tens
Thousands 
Hundreds 
Tens 
Ones 


o o o o

o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o 
b. 10 x 2 tens = 20 tens = 200 or 2 hundreds
Thousands 
Hundreds 
Tens 
Ones 

o o 
o o o o o o o o o o o o o o o o o o o o 

c. 5 hundreds x 10 = 50 hundreds = 5000 or 5 thousands
Thousands 
Hundreds 
Tens 
Ones 
o o o o o 
o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o 

2. Complete the following statements using your knowledge of place value:
a. 10 times as many as 1 hundred is 10 hundreds of 1 thousand.
b. 10 times as many as 6 hundreds is 60 hundreds or 6 thousands.
c. 10 times as many as 8 hundreds is 8 thousands.
d. 40 hundreds is the same as 4 thousands.
Use pictures, numbers, and words to explain how you got tour answer for Part (d).
Thousands  Hundreds 
o o o o 
o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o 
3. Katrina has 60 GB of storage on her tablet. Katrina’s father has 10 times as much storage on his computer. How much storage does Katrina’s father have? Use numbers of words to explain how you got your answer.
60 GB x 10 = 600 GB
Katrina’s father has 600 GB of storage on his tablet.
Thousands 
Hundreds 
o o o o o o 
o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o 
4. Katrina saved $200 to purchase her tablet. Her father spent 10 times as much money to buy his new computer. how much did her father’s computer cost? Use numbers or words to explain how you got your answer.
$200 x 10 = $2,000
Katrina’s father spent $2,000 for his new computer.
Thousands 
Hundreds 
o o 
o o o o o o o o o o o o o o o o o o o o 
5. Fill in the blacks to make the statements true.
a. 4 times as much as 3 is 12.
b. 10 times as much as 9 is 90.
c. 700 is 10 times as much as 70.
d. 8,000 is 10 times as much as 800.
6. Tomas’s grandfather is 100 years old. Tomas’ grandfather is 10 times old as Tomas. How old is Tomas?
___ x 10 = 100
Tomas is 10 years old.
100 years is 10 times as much as 10.
After doing the Eureka Math Lesson 1 Homework 4.1, you will then be given the Lesson 2 Homework 4.1. if you need the answer key of this lesson, below is the explanation of every question of the lesson.
1. As you did during the lesson, label and represent the product or quotient by drawing disks on the place value chart.
a. 10 x 4 thousands = 40 thousands = 4 thousands
Ten Thousands 
Thousands 
Hundreds 
Tens 
Ones 

X 10 o o o o 
o o o o

: 10 4 
b. 4 thousands : 10 = 40 hundreds : 10 = 4 hundreds
Thousands 
Hundreds 
Tens 
Ones 

o o o o 4 
: 10 4 
2. Solve for each expression by writing the solution in unit form and in standard form.
Expression 
Unit Form 
Standard Form 
10 x 3 tens 
30 tens 
300 
5 hundreds x 10 
50 hundreds 
5,000 
9 ten thousands : 10 
9 thousands 
9,000 
10 x 7 thousands 
70 thousands 
70,000 
3. Solve for each expression by writing the solution in unit form and in standard form.
Expression 
Unit Form 
Standard Form 
(2 tens 1 one) x 10 21 ones 
210 ones 
210 
(5 hundreds 5 tens) x 10 5 thousands 5 hundreds 
5 thousands 5 hundreds 
5,500 
(2 thousands 7 tens) : 10 
2 hundreds 7 ones 
207 
(4 ten thousands 8 hundreds) : 10 
4 thousands 8 tens 
4,080 
4.
a. Emily collected $950 selling Girl Scout cookies all day Saturday. Emily’s troop collected 10 times as much as she did. How much money did Emily’s troop raise?
$950 x 10 = $9,500
Emily’s troop raised $9,500 selling cookies all day Saturday.
b. On Sunday, Emily made 10 times as much on Monday. How much money did Emily collect on Monday?
___ x 10 = $950
Emily made $95 on Monday.