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## Texas Go Math Grade 3 Lesson 4.4 Answer Key Use the Break Apart Strategy to Add

**Unlock the Problem**

There are more zoos in Germany than in any other country. At one time, there were 355 zoos in the United States and 414 zoos in Germany. How many zoos were there in the United States and Germany altogether?

You can use the break apart strategy to find sums.

**Math Talk**

**Mathematical Processes**

Do you think the sum will be greater than or less than 800? Explain

Answer:

The sum is greater than 800.

355 + 414 = 769

Estimate: 800

Explanation:

The Break Apart Strategy of Addition involves separatelyÂ adding the ones place, tens place, hundreds place, etc. numbers.

These individual sums are then added together to get the final sum of the original numbers.

**Example 1**

Add. 355 + 414

STEP 1:

Estimate. 400 + 400 = _____

Answer:

400 + 400 = 800

Explanation:

355 is rounded to nearest hundreds as 400

414 is rounded to its nearest hundreds as 400

So, Estimate. 400 + 400 = 800

STEP 2:

Break apart the addends.

Start with the hundreds.

Then add each place value.

Answer:

Explanation:

The Break Apart Strategy of Addition involves separatelyÂ adding the ones place, tens place, hundreds place, etc. numbers.

These individual sums are then added together to get the final sum of the original numbers.

STEP 3:

Add the sums.

700 + 60 + 9 = _________

So, there were _________ zoos in the United States and Germany altogether.

Answer:

700 + 60 + 9 = 769

So, there were 769 zoos in the United States and Germany altogether.

Explanation:

The Break Apart Strategy of Addition involves separatelyÂ adding the ones place, tens place, hundreds place, etc. numbers.

These individual sums are then added together to get the final sum of the original numbers.

**Example 2**

Add. 343 + 259

STEP 1:

Estimate. 300 + 300 = ________

Answer:

300 + 300 = 600

Explanation:

as 343 is below 350, so 343 is rounded to 300 and

259 is greater then 250, so 259 is rounded to 300 hundred

300 + 300 = 600

STEP 2:

Break apart the addends.

Answer: 602

Explanation:

The Break Apart Strategy of Addition involves separatelyÂ adding the ones place, tens place, hundreds place, etc. numbers.

These individual sums are then added together to get the final sum of the original numbers.

STEP 3:

Add the sums.

500 + 90 + 12 = __________

So, 343 + 259 = __________

Answer: 602

Explanation:

The sum of the addends are same in both the equations.

500 + 90 + 12 = 602

So, 343 + 259 = 602

**Math Talk**

**Mathematical Processes**

Explain how the break apart strategy uses expanded forms of numbers.

Answer:

Break apart the addends.

Start with the hundreds.

Then add each place value.

Explanation:

**Share and Show**

**Go Math Grade 3 Lesson 4.4 Answer Key Question 1.**

Complete.

Estimate: 400 + 400 = ___________

So, 425 + 362 = ___________

Answer: 787

Explanation:

The Break Apart Strategy of Addition involves separatelyÂ adding the ones place, tens place, hundreds place, etc. numbers.

These individual sums are then added together to get the final sum of the original numbers.

**Estimate. Then use the break apart strategy to find the sum.**

Question 2.

Estimate to hundreds. __________

Answer: 588

Explanation:

Estimate to hundreds.

200 + 400 = 600

Question 3.

Estimate using compatible numbers. ___________

Answer: 672

Explanation:

Estimate to hundreds.

500 + 200 = 700

**Problem Solving**

**Practice: Copy and Solve Estimate. Then solve.**

Question 4.

163 + 205

Answer: 400

Explanation:

163 is rounded to 200 and

205 is rounded 200

So, Estimate 200 + 200 = 400

**3rd Grade Go Math Answer Key Lesson 4.4 Question 5.**

543 + 215

Answer: 700

Explanation:

543 is rounded to 500 and

215 is rounded 200

So, Estimate 500 + 200 = 700

Question 6.

213 + 328

Answer: 500

Explanation:

213 is rounded to 200 and

328 is rounded to 300

So, Estimate 200 + 300 = 500

Question 7.

152 + 304

Answer:

200 + 300 = 500

Explanation:

152 is rounded to 200 and

304 is rounded to 300

Estimate 200 + 300 = 500

Question 8.

There are 431 crayons in a box and 204 crayons on the floor. Estimate how many crayons there are altogether. Then solve.

Answer: 600

Explanation:

There are 431 crayons in a box and 204 crayons on the floor.

Estimate all crayons together

431 + 204 = 635

431 is rounded to 400 and 204 is rounded to 200

the sum 400 + 200 = 600

**Problem Solving**

**Use the table for 9-10.**

Question 9.

**H.O.T. Analyze** The number of students in Collins School is more than double the number of students in Montgomery School. What is the least number of students that could attend Collins School?

Answer: 580

Explanation:

Number of students in Montgomery School = 290

The number of students in Collins School is more than double the number of students in Montgomery School i.e.,

290 + 290 =580

Total students in Collin’s School = 580

**Go Math Answer Key 3rd Grade Break Apart Strategy to Add Question 10.**

**Multi-Step** Which two schools together have fewer than 600 students? Explain.

Answer:

Both schools have more than 600 students together.

Harrison and Bryant school togetherÂ or Montgomery and Bryant

Explanation:

Harrison and Bryant school together

304 + 421 = 725

Montgomery and Bryant school

290 + 421 =Â 711

Question 11.

**H.O.T. What’s the Error?** Lexi used the break apart strategy to find 145 + 203. Describe her error. What is the correct sum?

Answer: 348

Explanation:

203 is written as 230 , is the mistake

it should be written as follows

Question 12.

**H.O.T.** Use Math Language Is the sum of 425 and 390 less than or greater than 800? How do you know?

Answer:

The sum of 425 and 390 is greater than 800

Explanation:

425Â = 400 + 20 + 5

390Â = 300 + 90 + 0

425 + 390 = 700 + 110 + 5 = 815

425 + 390 =815 is greater then 800

**Daily Assessment Task**

**Fill in the bubble for the correct answer choice. Use strategies to solve.**

Question 13.

Jen used plastic building bricks to make a Japanese tea house. She used 117 green bricks and 246 gray bricks. How many green and gray bricks did Jen use?

(A) 147

(B) 216

(C) 363

(D) 454

Answer:

Option (C)

Explanation:

Jen used 117 green bricks and 246 gray bricks.

Total green and gray bricks Jen used

117Â Â =Â 100 + 10 + 7

246Â Â =Â 200 + 40 + 6

117 + 246 = 300 + 50 +13 = 300 + 63 = 363

Question 14.

John built two different model log cabins. One used 355 logs and the other used 532 logs. How many logs did John use to make both houses?

(A) 587

(B) 678

(C) 787

(D) 887

Answer:

Option (D)

Explanation:

One used 355 logs and the other used 532 logs.

Number logs John used to make both

355Â Â =Â 300 + 50 + 5

532Â Â =Â 500 + 30 + 2

355 + 532 = 800 + 80 + 7 = 800 + 87 = 887

**Go Math Answer Key 3rd Grade Breaking Apart Addition Question 15.**

**Multi-Step** John is building a tool shed. He has a box of nails that has 300 one-inch nails. He will need all but 13 of the one-inch nails and 312 two-inch nails. How many nails will John use?

(A) 459

(B) 599

(C) 689

(D) 759

Answer:

Option (B)

Explanation:

John has a box of nails that has 300 one-inch nails.

He will need all but 13 of the one-inch nails and 312 two-inch nails.

Number of nails John used

300 + 13 = 313

312 + 313 = 625

599 is rounded to 600 and 625 is rounded to 600

**Texas Test Prep**

Question 16.

What is the sum of 421 and 332?

(A) 763

(B) 751

(C) 753

(D) 653

Answer:

Option (C)

Explanation:

Use break apart strategy

421 =Â 400 + 20 + 1

332Â =Â 300 + 30 + 2

421 + 332 = 700 + 50 + 3 = 753

### Texas Go Math Grade 3 Lesson 4.4 Homework and Practice Answer Key

**Estimate. Then use the break apart strategy to find the sum.**

Question 1.

Estimate: ____________

Answer: 500

Explanation:

193 is more then 150, so 193 is rounded to 200 and

345 is less then 350, soÂ 345 is rounded to 300

200 + 300 = 500

Question 2.

Estimate: ____________

Answer: 700

Explanation:

214 is less then 250, so 214 is rounded to 200 and

532 is less then 550, so 532 is rounded to 500

200 + 500 = 700

Question 3.

Estimate: __________

Answer: 800

Explanation: 800

642 is less then 650, so 642 is rounded to 600 and

227 is , less then 250, soÂ 227 is rounded to 200

600 + 200 = 800

**Go Math Grade 3 Lesson 4.4 Homework Answer Key Question 4.**

Estimate: ____________

Answer: 700

Explanation: 700

271 is more then 250, so 271 is rounded to 300 and

438 is , less then 450, so 438 is rounded to 400

300 + 400 = 700

Question 5.

Estimate: ____________

Answer: 800

Explanation:

366 is more then 350, so 366 is rounded to 400 and

415 is ,less then 450, so 415 is rounded to 400

400 + 400 = 800

Question 6.

Estimate: _____________

Answer: 600

Explanation:

289 is more then 250, so 289 is rounded to 300 and

274 is ,more then 250, so 274 is rounded to 300

300 + 300 = 600

**Problem Solving**

Question 7.

How many gallons of white and beige paint were sold?

Answer:

609 Gallons

Explanation:

Number of white gallons = 336

336 = 300 + 30 + 6

Number of Beige gallons = 273

273 = 200 + 70 + 3

Total gallons sold together

336 + 273 = 500 + 100Â + 9 = 600 + 9 = 609

**Lesson Check**

**Fill in the bubble completely to show your answer.**

Question 8.

There are two baby giraffes at the zoo. One weighs 148 pounds and the other weighs 137 pounds. Which is their combined weight?

(A) 295 pounds

(B) 275 pounds

(C) 285 pounds

(D) 278 pounds

Answer:

Option (C)

Explanation:

One baby giraffe weighs 148 pounds

148 = 100 + 40 +8

the other baby weighs 137 pounds.

137 = 100 + 30 + 7

Combined weight for both babies

148 + 137 = 200 + 70 + 15 = 200 + 85 = 285 pounds

**Go Math 3rd Grade Lesson 4.4 Homework Answer Key Question 9.**

One day, Elmo the elephant ate 128 pounds of food. Ella the elephant ate 115 pounds of food. Together, how many pounds of food did the elephants eat that day?

(A) 244 pounds

(B) 233 pounds

(C) 253 pounds

(D) 243 pounds

Answer:

Option (D)

Explanation:

Elmo the elephant ate 128 pounds of food.

128 = 100 + 20 + 8

Ella the elephant ate 115 pounds of food.

115 = 100 + 10 + 5

Total pounds of food the elephants ate that day

128 + 115 = 200 + 30 + 13 = 243

Question 10.

There are 176 snakes and 236 birds living at the zoo. How many birds and snakes are there?

(A) 422

(B) 412

(C) 402

(D) 302

Answer:

Option (B)

Explanation:

There are 176 snakes and 236 birds living at the zoo.

176 = 100 + 70 + 6

236 = 200 + 30 + 6

Birds and snakes together

176 + 236 = 300 + 100 + 12 =412

Question 11.

A zoo rescued 252 animals last year and 328 animals this year. How many animals were rescued in these two years?

(A) 590

(B) 580

(C) 570

(D) 680

Answer:

Option (B)

Explanation:

A zoo rescued 252 animals last year

252Â =Â Â 200Â + 50Â Â +Â 2

A zoo rescued 328 animals this year.

328Â =Â Â 300Â +Â 20Â +Â 8

Total animals rescued in these two years

252+ 328 = 500 + 70 + 10 = 580

**Go Math Lesson 4.4 3rd Grade Answer Key Question 12.**

**Multi-Step** What is the total amount of money donated to the zoo for June, July, and August?

(A) $928

(B) $938

(C) $828

(D) $611

Answer:

Option (A)

Explanation:

Money donated in the month of June = $289

Money donated in the month of July = $322

Money donated in the month of August = $317

The total amount of money donated to the zoo for June, July, and August

$289 + $322 + $317 = $928