# Lesson 12 Homework 4.1 Answer Key

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Lesson 12 Homework 4.1 asks you to estimated and then solve the problem. You will have to model the problem with a tape diagram. Aside from that, it is also needed for you to explain if your answer is reasonable.

There are a total of three numbers included in Lesson 12 Homework 4.1. Here are all these three:

1. There were 3,905 more hits on the school’s website in January than February. February had 9,854 hits. how many hits did the school’s website have during both months?

a. About how many hits did the website have during January and February?
b. Exactly how many hits did the website have during January and February?

Write a sentence to explain your reasoning.

2. On Sunday, 77,098 fans attended a New York Jets game. The same day, 3,397 more fans attended a New York Giants game than attended the Jets game. altogether, how many fans attended the games?

a. What was the actual member of fans who attended the games?
b. Is your answer reasonable? Round each number to the nearest thousand to find an estimated of how many fans attended the games.

3. Last year on Ted’s farm, his four cows produced the following number of liters of milk:

 Cow Litters of Milk Produced Daisy 5,098 Betsy 8,073 Mary 9,980 Buttercup 7,087

a. Betsy produced 986 more liters of milk than Buttercup. How many liters of milk did all 4 cows produce?

Please try these questions and do not go straight to cheat by looking at the answer key below. Getting the instant answer might make your work easier but it is clearly not good for yourself. Not only will not make you improve but also make you a dishonest person.

For those who have completed these three, you must want to check if your work is correct or if there is something that has to be corrected. Here is the Lesson 12 Homework 4.1 answer key for you:

1.       a. F: 9,854 ≈ 10,000

J: 9,854; 3,905 ≈ 10,000 + 4,000 ≈ 14,000

Total: 14,000 + 10,000 = 24,000

b. F: 9,854

J: 9,854; 3,905 = 13,759

Total: 13,759 + 9,854 = 23,613

The website had exactly 23,613 hits during January and February.

c. The actual number of hits (23,614) is reasonable because it is close to the estimate of 24,000.

2.       a. J: 77,098

G: 77,098; 3,399 = 80,495

Total: 80,495 + 77,098 = 157,593

The total number of fans attending the game is 157,593.

b. J: 77,098 ≈ 77,000

G: 80,495 ≈ 80,000

Total: 77,000 + 80,000 = 157,000

The actual number of fans attending (157,593) is reasonable because the estimate of 157,000 is close.

3.       a. Buttercup: 7,087

Betsy: 7,087; 986 = 8,073

Total: 7,087 + 8,073 + 9,980 + 7,087 = 30,238

All four cows produced 30,238 liters of milk.

b. Daisy ≈ 5,000

Betsy ≈ 8,000

Mary ≈ 10,000

Buttercup ≈ 7,000

Total: 5,000 + 8,000 + 10,000 + 7,000 = 30,000

30,238 liters of milk is reasonable because it is close to the estimate of 30,000.

So, how many questions that you get it right? If there is one or two wrong, you can look at the explanation and learn until you get it.

After completing the Lesson 12 Homework 4.1, you might also want to continue by challenging yourself the next homework of the other lessons.

Lesson 13 Homework 4.1:

1. Use the standard algorithm to solve the following subtraction problems:

a. 2,431 – 341 = _____
b. 422,431 – 14,321 = _____
c. 422,431 – 92,420 = _____
d. 422,431 – 392,420 = _____
e. 982,430 – 92,300 = _____
f. 243,089 – 137,079 = _____
g. 2,431 – 920 = _____
h. 892,431 – 520,800 = _____

2. What number must be added to 14,056 to result in a sum of 38,773?

3. An elementary school collected 1,705 bottles for a recycling program. A high school also collected some bottles. Both schools collected 3,627 bottles combined. How many bottles did the high school collect?

4. A computer shop sold \$356,291 worth of computers and accessories. It sold \$43,720 worth of accessories. How much did the computer shop sell in computers?

5. The population of a city is 538,381. In that population, 148,170 are children.

a. How many adults live in the city?
b. 186,101 of the adults are males. How many adults are female?

1.       a. 2,090

b. 408,110

c. 330,011

d. 30,001

e. 890,130

f. 106,010

g. 1,511

h. 371,631

2.       14,056 + _____ = 38,773

38,773 – 14,056 = 24,717

The number that must be added to 14,056 is 24,717.

3.       1,705 + _____ = 3,627

3,627 – 1,705 = 1,922

The high school collected 1,922 bottles.

4.       _____ + 43,720 = 356,291

356,291 – 43,720 = 312,571

The computer shop sold 312,571 computers.

5.       a. _____ + 148,170 = 538,381

538,381 – 148,170 = 390,211

There are 390,211 adults that live in the city.

b. 186,101 + _____ = 390,211 (adults)

390,211 – 186,101 = 204,110

There are 204,110 females.

If you want more, you can visit this link here to find more Homework 4.1.Tthere are a total of 19 homework that you can use to challenge yourself. If you have done 12 homework, it means you still have seven homework to go. Please try your best and see if you are capable of slaying everything. Along with the questions, there are also the answer keys. It means you can just check them out immediately after completing everything. Once again, do not go straight to the answer key and make some effort for the sake of yourself. Remember that cheating is always prohibited and it si definitely not good.