We included **HMH Into Math Grade 4 Answer Key**** PDF** **Module 2 Lesson 1 Add Whole Numbers and Assess Reasonableness** to make students experts in learning maths.

## HMH Into Math Grade 4 Module 2 Lesson 1 Answer Key Add Whole Numbers and Assess Reasonableness

I Can add whole numbers greater than 1,000 using place value and a grid with regrouping.

**Spark Your Learning**

In 2016, Washington’s Port Townsend-Coupeville ferry had about 329 thousand vehicle passengers and about 118 thousand foot passengers. How many passengers rode the ferry in 2016? How can you write this using numbers only?

Show your thinking.

**Turn and Talk** Why would an estimate instead of an exact answer be a reasonable solution to this problem?

Explanation:

Estimation makes to found the sum easier

**Build Understanding**

1. In 2015, North Dakota reported 545,027 licensed drivers, and Wyoming reported 422,450 licensed drivers. How many licensed drivers were there in both states? Use rounding as a strategy to show your answer is reasonable.

Use the grid to help you solve the problem.

There were 967,477 licensed drivers ¡n both states.

A. Round each addend to the nearest ten thousand and then add. Show your work.

_______________________

Explanation:

545,027 is rounded as 550,000

422,450 is rounded as 420,000

About how many total licensed drivers were there in 2015?

_______________________

Explanation:

550,000 + 420,000 = 970,000

970,000 total licensed drivers were there in 2015.

**Connect to Vocabulary**

To estimate is to find an answer that is close to the exact amount.

B. Does your estimate show your answer is reasonable? Explain.

_______________________

_______________________

Explanation:

My estimation and the exact has a little vary so my answer is reasonable.

**Turn and Talk** How can you use a grid as a place-value chart to help you add greater numbers?

**Step It Out**

2. In January, 611,749 domestic passengers and 106,909 international passengers departed or arrived at Terminal 4 of the airport. What number of passengers departed or arrived at Terminal 4 in January?

**Estimate. Then find the sum.**

A. Round the numbers to the nearest hundred thousand. Then add.

B. Use the grid to help you align the addends by place value. Find the sum.

In January, _____ passengers arrived or departed at Terminal 4.

C. Compare your sum to your estimate. Is your answer reasonable? Explain.

Explanation:

611,749 + 106,909 = 718,658

611,749 Round the numbers to the nearest hundred thousand = 600,000

106,909 Round the numbers to the nearest hundred thousand = 100,000

600,000 + 100,000 = 700,000

By this we can say that my estimation is correct

**Check Understanding Math Board**

Question 1.

A company’s buses make 480,000 trips. A second company’s buses make 44,100 trips. How many trips do the two companies’ buses make? ____

Answer:

480,000 + 44,100 = 524,100

Explanation:

Estimation:

A company’s buses make 480,000 trips. A second company’s buses make 44,100 trips.

524100 trips that the two companies’ buses make

**Estimate. Then find the sum.**

Question 2.

Estimate: ____

Answer:

Explanation:

Estimation:

Rounded to nearest ten thousands

Question 3.

Estimate: ___

Answer:

Explanation:

Estimation:

Rounded to nearest ten thousands

Question 4.

Estimate:

Answer:

Explanation:

Estimation:

82,349 ; 16,624 are written as 82,000 + 16,000 = 98,000

Rounded to nearest ten thousands

**On Your Own**

Question 5.

**Construct Arguments** During a year, 580,242 vehicle passengers and 299,860 foot passengers ride on a ferry. How many passengers ride the ferry that year? Explain how you know your answer is reasonable.

_________________________

_________________________

_________________________

Answer:

580,242 + 299,860 = 880,102

Explanation:

Estimation:

580,242 ; 299,860 are written as 580,000 + 300,000 = 880,000

by this we can say that my estimation is reasonable.

Rounded to nearest ten thousands

Question 6.

**Use Structure** The daily average number of bus passengers for different local routes is shown. How many bus passengers are there daily?

_______________________

Answer:

577,547 bus passengers are there daily

Explanation:

Red + green + blue is 124,707 + 358,305 + 94,535 = 577,547

**Estimate. Then find the sum.**

Question 7.

Estimate: _____

Answer:

Explanation:

Estimation:

1223 ; 2009 are written as 1200 + 2000 = 3200

Rounded to nearest thousands

Question 8.

Estimate: _____

Answer:

Explanation:

Estimation:

609,987 ; 123,654 are written as 600,000 + 120,000 = 720,000

Rounded to nearest ten thousands

Question 9.

Estimate: ____

Answer:

Explanation:

Estimation:

99,858 ; 27,415 are written as 10,000 + 30,000 = 40,000

Rounded to nearest ten thousands

Question 10.

**Open Ended** Write and solve a real-world problem using 461,283 and 215,079 as addends.

__________________________________________

__________________________________________

__________________________________________

Answer:

In America there are around 461,283 bird species and 215,079 water species are there.

what is the total estimation of birds and water animals

Explanation:

Estimation:

461,283,215,079 is written as 460,000 + 220,000 = 680,000

Rounded to nearest ten thousands

**I’m in a Learning Mindset!**

Did using a grid help me add greater numbers? How?

Explanation:

Buy counting the grids makes the addition easier.

so, that helps to add the greatest numbers.