We included **HMH Into Math Grade 2 Answer Key PDF** **Module 16 Lesson 2 Decompose Three-Digit Addends** to make students experts in learning maths.

## HMH Into Math Grade 2 Module 16 Lesson 2 Answer Key Decompose Three-Digit Addends

I Can break apart addends to add hundreds, tens, and ones.

**Spark Your Learning**

Show some different ways you can represent the number of baby turtles.

_________ + _________ + _________ = ___________

_______________

Mr. Costa watches 236 baby sea turtles on the beach. How can you represent the number of baby turtles? Think about place value.

Answer:

200 + 30 + 6 = 236

236

**Build Understanding**

Mr. Uba plants 216 carrot seeds and 153 radish seeds. How many seeds does Mr. Uba plant? Draw a visual model to show the number of carrot and radish seeds.

A. How can you break apart each addend?

Answer:

B. Add the hundreds. Add the tens. Add the ones.

Answer:

C. Add the sums of the hundreds, tens, and ones.

_____+______+________ = _________

Answer:

300 + 60 + 9 = 369

D. Solve. Mr. Uba plants

___________ seeds.

Answer:

369 seeds

**Turn and Talk** When you break apart addends, how many zeros are there in each place?

Answer:

in hundreds place two zeros

in tens place one zero

and in ones place there will be no zeros

**Step It Out**

Question 1.

Add 528 and 265.

A. Break apart each addend. Add the numbers in each column.

Answer:

B. Add the sums of the hundreds, tens, and ones.

_______ + ________ + _________ = _________

Answer:

C. Find the sum.

_______ + ________ = _________

Answer:

700 + 93 = 793

**Turn and Talk** How does breaking apart addends help you add two three-digit numbers? Explain.

Answer:

Decomposing is a strategy to solve math problems by breaking a number down into its digit values.

For example, 47 becomes 40 and 7. Once you break the number down,

you can add or subtract the individual digit values to get the answer.

**Check Understanding**

Question 1.

There are 407 roses and 322 daisies in a garden. How many flowers are in the garden? Show how to break apart the addends to add 407 and 322.

__________ flowers

Answer:

There are 407 roses and 322 daisies in a garden.

407 + 322 = 729

**On Your Own**

Question 2.

Attend to Precision There are 268 adult runners and 125 teen runners in a race. How many runners are in the race? Break apart the addends to solve.

Did breaking apart the addends give you ten or more ones? Explain.

Answer:

Explanation:

There are 268 adult runners and 125 teen runners in a race.

268 + 125 = 393

Question 3.

Open Ended A problem has been started for you below. Choose a second three-digit addend. Find the sum.

Answer:

choose 223 as the second addend

343 + 223 = 566

**I’m in a Learning Mindset!**

What did I learn in addition to what was taught in the lesson?

Answer:

adding the hundreds, tens and ones separately.