McGraw Hill My Math Grade 2 Chapter 7 Lesson 1 Answer Key Take Apart Hundreds to Subtract

All the solutions provided in McGraw Hill My Math Grade 2 Answer Key PDF Chapter 7 Lesson 1 Take Apart Hundreds to Subtract will give you a clear idea of the concepts.

McGraw-Hill My Math Grade 2 Answer Key Chapter 7 Lesson 1 Take Apart Hundreds to Subtract

Explore and Explain

________________ crayons
Teacher Directions: At the beginning of the year, Mrs. Jones put 403 new crayons in the crayon bucket. After the first month of school, 97 crayons were lost. How many crayons were left in the bucket? Use base-ten blocks to help you solve the problem. Draw the blocks you used and write the answer.
Answer:
403 – 97 = 306
There are 306 crayons left in the bucket.

Explanation:

100 – 97 = 3
303 + 3 = 306
So, 403 – 97 = 306

See and Show

You can take apart hundreds to subtract mentally.

Take apart 800 as 700 and 100 since it is easier to subtract 98 from 100.

Take apart 401 as 301 and 100 since it is easier to subtract 97 from 100.

Take apart hundreds to subtract.

Question 1.

__________ – 99 = _____________
__________ + ___________ = ___________
So, 300 – 99 = ____________.
Answer:
201

Explanation:

100 – 99 = 1
200 + 1 = 201
So, 300 – 99 = 201

Question 2.

__________ – 98 = _____________
__________ + ___________ = ___________
So, 422 – 98 = ____________.
Answer:
324

Explanation:

100 – 98 = 2
322 + 2 = 324
So, 422 – 98 = 324

Talk Math In Exercise 2, why is 2 added back?
Answer:
To get the final result 2 is added back.

Explanation:
In exercise 2 the given number is 422 – 98
Take apart 422 as 322 and 100 since it is easier to subtract 98 from 100.
100 – 98 = 2
322 + 2 = 324
Here 2 is added back to get the final result.

On Your Own

Take apart hundreds to subtract.

Question 3.

__________ – 99 = _____________
__________ + ___________ = ___________
So, 240 – 99 = ____________.
Answer:
141

Explanation:

100 – 99 = 1
140 + 1 = 141
So, 240 – 99 = 141

Question 4.

__________ – 98 = _____________
__________ + ___________ = ___________
So, 700 – 98 = ____________.
Answer:
602

Explanation:

100 – 98 = 2
600 + 2 = 602
So, 700 – 98 = 602

Question 5.

__________ – 97 = _____________
__________ + ___________ = ___________
So, 542 – 97 = ____________
Answer:
445

Explanation:

100 – 97 = 3
442 + 3 = 445
So, 542 – 97 = 445

Question 6.

__________ – 98 = _____________
__________ + ___________ = ___________
So, 702 – 98 = ____________.
Answer:
604

Explanation:

100 – 98 = 2
602 + 2 = 604
So, 702 – 98 = 604

Question 7.

__________ – 97 = _____________
__________ + ___________ = ___________
So, 200 – 97 = ____________.
Answer:
103

Explanation:

100 – 97 = 3
100 + 3 = 103
So, 200 – 97 = 103

Question 8.

__________ – 99 = _____________
__________ + ___________ = ___________
So, 711 – 99 = ____________.
Answer:
612

Explanation:

100 – 99 = 1
611 + 1 = 612
So, 711 – 99 = 612

Problem Solving

Question 9.
Eli counts 335 sunflower seeds. He places 98 of the seeds in a bowl. How many seeds were left?
_____________ sunflower seeds
Answer:
237 sunflower seeds.

Explanation:

335 – 98
235  100 – 98
100 – 98 = 2
235 + 2 = 237
So 335 – 98 = 237

Question 10.
Rachel has 148 blueberries. She gives 97 blueberries to her brother. How many blueberries does Rachel have left?

_______________ blueberries
Answer:
148 – 97 = 51

Explanation:

Given,
Rachel has 148 blueberries and She gives 97 blueberries to her brother
148 – 97
148  100 – 3
148 – 100 = 48
48 + 3 = 51

Question 11.
382 people were in our school auditorium. 99 people left. How many people are still in the auditorium?
______________ people
Answer:
283 people.

Explanation:
382 people were in our school auditorium
99 people left
382 – 99
282 100 – 99
100 – 99 = 1
282 + 1 = 283
382 – 99 = 283
There are still 283 people in the auditorium.

HOT Problem Explain in words how to solve 700 – 97.
Answer:
603

Explanation:
Given,
700 – 97
take apart hundreds to subtract mentally.
600 100 -97
100 – 97 = 3
600 + 3 = 603
So 700 – 97 = 603

McGraw Hill My Math Grade 2 Chapter 7 Lesson 1 My Homework Answer Key

Practice

Take apart hundreds to subtract.

Question 1.

____________ – ____________ = ____________
____________ + ____________ = ____________
So, 835 – 98 = _______________.
Answer:
737

Explanation:

100 – 98 = 2
735 + 2 = 737
So, 835 – 98 = 737

Question 2.

____________ – ____________ = ____________
____________ + ____________ = ____________
So, 748 – 97 = _______________.
Answer:
651

Explanation:

100 – 97 = 3
648 + 3 = 651
So, 748 – 97 = 651

Question 3.

____________ – ____________ = ____________
____________ + ____________ = ____________
So, 395 – 99 = _______________.
Answer:
296

Explanation:

100 – 99 = 1
295 + 1 = 296
So, 395 – 99 = 296

Question 4.

____________ – ____________ = ____________
____________ + ____________ = ____________
So, 600 – 97 = _______________.
Answer:
503

Explanation:

100 – 97 = 3
500 + 3 = 503
So, 600 – 97 = 503

Question 5.
Students go to school for 180 days. 96 school days were sunny. How many school days were not sunny?

____________ days
Answer:
84 days

Explanation:

100 – 96 = 4
80 + 4 = 84
So. 180 – 96 = 84

Test Practice

Question 6.
How would you take apart 355 to solve 355 – 94?
(A) 355 and 100
(B) 300 and 55
(C) 255 and 100
(D) 255 and 94
Answer:
255 and 100

Explanation:

Math at Home Have your child solve 321 – 99 by taking apart hundreds to subtract.
Answer:
222

Explanation:

100 – 99 = 1
221 + 1 = 222
So, 321 – 99 = 222