McGraw Hill My Math Grade 2 Chapter 6 Lesson 3 Answer Key Mentally Add 10 or 100

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All the solutions provided in McGraw Hill Math Grade 2 Answer Key PDF Chapter 6 Lesson 3 Mentally Add 10 or 100 will give you a clear idea of the concepts.

McGraw-Hill My Math Grade 2 Answer Key Chapter 6 Lesson 3 Mentally Add 10 or 100

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McGraw Hill My Math Grade 2 Chapter 6 Lesson 3 Answer Key Mentally Add 10 or 100 1

Teacher Directions: Model using base-ten blocks. 126 students are waiting in line for the yellow buses and 126 students are also waiting for the green buses. 100 more students get in line for the yellow buses. 10 more students get in line for the green buses. How many students are in line for each bus now? Write the numbers.

Answer:
There are 226 students for yellow buses and 136 students for green buses.

Explanation:
Given that 126 students are waiting in line for the yellow buses and 126 students are also waiting for the green buses and 100 more students get in line for the yellow buses. which is 126+100 = 226 students and 10 more students get in line for the green buses which is 126+10 = 136 students. So there are 226 students for yellow buses and 136 students for green buses.
McGraw-Hill-My-Math-Grade-2-Chapter-6-Le

See and Show

To add 10 or 100, think of addition facts you know.
Mentally add 100.
McGraw Hill My Math Grade 2 Chapter 6 Lesson 3 Answer Key Mentally Add 10 or 100 2

Helpful Hint
you know that 2 + 1 = 3.

McGraw Hill My Math Grade 2 Chapter 6 Lesson 3 Answer Key Mentally Add 10 or 100 3

Mentally add 10.
McGraw Hill My Math Grade 2 Chapter 6 Lesson 3 Answer Key Mentally Add 10 or 100 4

Helpful Hint
You know that 5 + 1 = 6.

McGraw Hill My Math Grade 2 Chapter 6 Lesson 3 Answer Key Mentally Add 10 or 100 5

Add.

Question 1.
McGraw Hill My Math Grade 2 Chapter 6 Lesson 3 Answer Key Mentally Add 10 or 100 6
Answer:
450+100 = 550.

Explanation:
Here we need to add 100, so we will mentally add 100 to 450 which is 4+1 = 5. So 450+100 = 550.
McGraw Hill My Math Grade 2 Chapter 6 Lesson 3 Answer Key Mentally Add 10 or 100 1-1

Question 2.
McGraw Hill My Math Grade 2 Chapter 6 Lesson 3 Answer Key Mentally Add 10 or 100 7
Answer:
630 + 10 = 640.

Explanation:
Here we need to add 10, so we will mentally add 10 to 630 which is 3+1 = 4. So 630+10 = 640.
McGraw Hill My Math Grade 2 Chapter 6 Lesson 3 Answer Key Mentally Add 10 or 100 1-25

Question 3.
McGraw Hill My Math Grade 2 Chapter 6 Lesson 3 Answer Key Mentally Add 10 or 100 8
Answer:
801 + 100 = 901.

Explanation:
Here we need to add 100, so we will mentally add 100 to 801 which is 8+1 = 9. So 801+100 = 901.
McGraw Hill My Math Grade 2 Chapter 6 Lesson 3 Answer Key Mentally Add 10 or 100 1-24

Question 4.
McGraw Hill My Math Grade 2 Chapter 6 Lesson 3 Answer Key Mentally Add 10 or 100 9
Answer:
115 + 10 = 125.

Explanation:
Here we need to add 10, so we will mentally add 10 to 115 which is 1+1 = 2. So 115+10 = 125.
McGraw Hill My Math Grade 2 Chapter 6 Lesson 3 Answer Key Mentally Add 10 or 100 1-23

Question 5.
McGraw Hill My Math Grade 2 Chapter 6 Lesson 3 Answer Key Mentally Add 10 or 100 10
Answer:
500 + 10 = 510.

Explanation:
Here we need to add 10, so we will mentally add 10 to 500 which is 0+1 = 5. So 500+10 = 510.
McGraw Hill My Math Grade 2 Chapter 6 Lesson 3 Answer Key Mentally Add 10 or 100 1-22

Question 6.
McGraw Hill My Math Grade 2 Chapter 6 Lesson 3 Answer Key Mentally Add 10 or 100 11
Answer:
237 + 100 = 337.

Explanation:
Here we need to add 100, so we will mentally add 100 to 237 which is 2+1 = 3. So 237+100 = 337.
McGraw Hill My Math Grade 2 Chapter 6 Lesson 3 Answer Key Mentally Add 10 or 100 1-21

Question 7.
327 + 100 = ____
Answer:
327 + 100 = 427.

Explanation:
Here we need to add 100, so we will mentally add 100 to 327 which is 3+1 = 4. So 327+100 = 427.
McGraw Hill My Math Grade 2 Chapter 6 Lesson 3 Answer Key Mentally Add 10 or 100 1-20

Question 8.
755 + 10 = ____
Answer:
755 + 10 = 765.

Explanation:
Here we need to add 10, so we will mentally add 10 to 755 which is 5+1 = 6. So 755+10 = 765.
McGraw Hill My Math Grade 2 Chapter 6 Lesson 3 Answer Key Mentally Add 10 or 100 1-19

Talk Math Why is it easy to mentally add 10 or 100?

Answer:
It is easy to mentally add 10 or 100, because for adding mentally 10 we will add tens place digit only and for adding mentally 100 we will add hundreds place digit. So it is easy to mentally add 10 or 100.

On My Math

Add.

Question 9.
McGraw Hill My Math Grade 2 Chapter 6 Lesson 3 Answer Key Mentally Add 10 or 100 12
Answer:
122 + 100 = 222.

Explanation:
Here we need to add 100, so we will mentally add 100 to 122 which is 1+1 = 2. So 122+100 = 222.
McGraw Hill My Math Grade 2 Chapter 6 Lesson 3 Answer Key Mentally Add 10 or 100 1-18

Question 10.
McGraw Hill My Math Grade 2 Chapter 6 Lesson 3 Answer Key Mentally Add 10 or 100 13
Answer:
378 + 10 = 388.

Explanation:
Here we need to add 10, so we will mentally add 10 to 378 which is 7+1 = 8. So 378+10 = 388.
McGraw Hill My Math Grade 2 Chapter 6 Lesson 3 Answer Key Mentally Add 10 or 100 1-17

Question 11.
McGraw Hill My Math Grade 2 Chapter 6 Lesson 3 Answer Key Mentally Add 10 or 100 14
Answer:
500 + 10 = 510.

Explanation:
Here we need to add 10, so we will mentally add 10 to 500 which is 0+1 = 1. So 500+10 = 510.
McGraw Hill My Math Grade 2 Chapter 6 Lesson 3 Answer Key Mentally Add 10 or 100 1-15

Question 12.
McGraw Hill My Math Grade 2 Chapter 6 Lesson 3 Answer Key Mentally Add 10 or 100 15
Answer:
200 + 100 = 300.

Explanation:
Here we need to add 100, so we will mentally add 100 to 200 which is 2+1 = 3. So 200+100 = 300.
McGraw Hill My Math Grade 2 Chapter 6 Lesson 3 Answer Key Mentally Add 10 or 100 1-14

Question 13.
McGraw Hill My Math Grade 2 Chapter 6 Lesson 3 Answer Key Mentally Add 10 or 100 16
Answer:
747 + 100 = 847.

Explanation:
Here we need to add 100, so we will mentally add 100 to 747 which is 7+1 = 8. So 747+100 = 847.
McGraw Hill My Math Grade 2 Chapter 6 Lesson 3 Answer Key Mentally Add 10 or 100 1-13

Question 14.
McGraw Hill My Math Grade 2 Chapter 6 Lesson 3 Answer Key Mentally Add 10 or 100 17
Answer:
800 + 10 = 810.

Explanation:
Here we need to add 10, so we will mentally add 10 to 800 which is 0+1 = 1. So 800+10 = 810.
McGraw Hill My Math Grade 2 Chapter 6 Lesson 3 Answer Key Mentally Add 10 or 100 1-12

Question 15.
McGraw Hill My Math Grade 2 Chapter 6 Lesson 3 Answer Key Mentally Add 10 or 100 18
Answer:
400 + 10 = 410.

Explanation:
Here we need to add 10, so we will mentally add 10 to 400 which is 0+1 = 1. So 400+10 = 410.
McGraw Hill My Math Grade 2 Chapter 6 Lesson 3 Answer Key Mentally Add 10 or 100 1-11

Question 16.
McGraw Hill My Math Grade 2 Chapter 6 Lesson 3 Answer Key Mentally Add 10 or 100 19
Answer:
668 + 100 = 768.

Explanation:
Here we need to add 100, so we will mentally add 100 to 668 which is 6+1 = 7. So 668+100 = 768.
McGraw Hill My Math Grade 2 Chapter 6 Lesson 3 Answer Key Mentally Add 10 or 100 1-10

Question 17.
McGraw Hill My Math Grade 2 Chapter 6 Lesson 3 Answer Key Mentally Add 10 or 100 20
Answer:
817 + 100 = 917.

Explanation:
Here we need to add 100, so we will mentally add 100 to 817 which is 8+1 = 9. So 817+100 = 917.
McGraw Hill My Math Grade 2 Chapter 6 Lesson 3 Answer Key Mentally Add 10 or 100 1-9

Find the missing addend.

Question 18.
392 + ______ = 492
Answer:
392 + 100 = 492.

Explanation:
To find the missing addend we will subtract the addend from the sum. So 492-392 is 100. The missing addend is 100.

Question 19.
______ + 10 = 825
Answer:
815 + 10 = 825.

Explanation:
To find the missing addend we will subtract the addend from the sum. So 825-10 is 815. The missing addend is 815.

Question 20.
101 + ______ = 111
Answer:
101 + 10 = 111.

Explanation:
To find the missing addend we will subtract the addend from the sum. So 111-101 is 10. The missing addend is 10.

Question 21.
756 + ______ = 856
Answer:
756 + 100 = 856.

Explanation:
To find the missing addend we will subtract the addend from the sum. So 856-756 is 100. The missing addend is 100.

Question 22.
_____ + 100 = 823
Answer:
723 + 100 = 823.

Explanation:
To find the missing addend we will subtract the addend from the sum. So 823-100 is 723. The missing addend is 723.

Question 23.
_____ + 10 = 846
Answer:
836 + 10 = 846.

Explanation:
To find the missing addend we will subtract the addend from the sum. So 846-10 is 836. The missing addend is 836.

Question 24.
385 + _______ = 485
Answer:
385 + 100 = 485.

Explanation:
To find the missing addend we will subtract the addend from the sum. So 485-385 is 100. The missing addend is 100.

McGraw Hill My Math Grade 2 Chapter 6 Lesson 3 Answer Key Mentally Add 10 or 100 21

Problem Solving

Question 25.
448 birds are in the park. 100 more birds fly into the park. How many birds are in the park now?
___ birds
Answer:
448+100 = 548 birds.

Explanation:
Given that 448 birds are in the park and 100 more birds fly into the park. So the number of birds in the park now is 448+100 which is 548 birds.

Question 26.
A mail carrier delivered 352 packages last month. She delivered 10 more packages last week. How many packages did she deliver in all?
McGraw Hill My Math Grade 2 Chapter 6 Lesson 3 Answer Key Mentally Add 10 or 100 22
____ packages
Answer:
362 packages.

Explanation:
Given that a mail carrier delivered 352 packages last month as she delivered 10 more packages last week. The number of packages did she delivered in all is 352+10 which is 362 packages.

Question 27.
There are 112 sheep in a barn. More sheep come into the barn. Now there are 122 sheep. How many sheep came into the barn?
____ sheep
Answer:
The number of sheep that came into the barn is 10 sheep.

Explanation:
Given that there are 112 sheep in a barn as more sheep come into the barn. Now there are 122 sheep. So the number of sheep that came into the barn is 122-112 which is 10 sheep.

Write Math Explain how to add 100 to 899.

Answer:
899 – 100 = 799.

Explanation:
We will add 100 mentally to 899 which is 8-1 = 7. So 899-100 = 799.

McGraw Hill My Math Grade 2 Chapter 6 Lesson 3 My Homework Answer Key

Practice

Add.

Question 1.
McGraw Hill My Math Grade 2 Chapter 6 Lesson 3 Answer Key Mentally Add 10 or 100 23
Answer:
235 + 100 = 335.

Explanation:
Here we need to add 100, so we will mentally add 100 to 235 which is 2+1 = 3. So 235+100 = 335.
McGraw Hill My Math Grade 2 Chapter 6 Lesson 3 Answer Key Mentally Add 10 or 100 1-7

Question 2.
McGraw Hill My Math Grade 2 Chapter 6 Lesson 3 Answer Key Mentally Add 10 or 100 24
Answer:
370 + 10 = 380.

Explanation:
Here we need to add 10, so we will mentally add 10 to 370 which is 7+1 = 8. So 370+10 = 380.
McGraw Hill My Math Grade 2 Chapter 6 Lesson 3 Answer Key Mentally Add 10 or 100 1-8

Question 3.
McGraw Hill My Math Grade 2 Chapter 6 Lesson 3 Answer Key Mentally Add 10 or 100 25
Answer:
532 + 100 = 632.

Explanation:
Here we need to add 100, so we will mentally add 100 to 532 which is 5+1 = 6. So 532+100 = 632.
McGraw Hill My Math Grade 2 Chapter 6 Lesson 3 Answer Key Mentally Add 10 or 100 1-6

Question 4.
McGraw Hill My Math Grade 2 Chapter 6 Lesson 3 Answer Key Mentally Add 10 or 100 26
Answer:
365 + 10 = 375.

Explanation:
Here we need to add 10, so we will mentally add 10 to 365 which is 6+1 = 7. So 365+10 = 375.McGraw Hill My Math Grade 2 Chapter 6 Lesson 3 Answer Key Mentally Add 10 or 100 1-5

Question 5.
McGraw Hill My Math Grade 2 Chapter 6 Lesson 3 Answer Key Mentally Add 10 or 100 27
Answer:
178 + 100 = 278.

Explanation:
Here we need to add 100, so we will mentally add 100 to 178 which is 1+1 = 2. So 178+100 = 278.
McGraw Hill My Math Grade 2 Chapter 6 Lesson 3 Answer Key Mentally Add 10 or 100 1-4

Question 6.
McGraw Hill My Math Grade 2 Chapter 6 Lesson 3 Answer Key Mentally Add 10 or 100 28
Answer:
600 + 10 = 610.

Explanation:
Here we need to add 10, so we will mentally add 10 to 600 which is 0+1 = 5. So 600+10 = 610.
McGraw Hill My Math Grade 2 Chapter 6 Lesson 3 Answer Key Mentally Add 10 or 100 1-3

Find the missing addend.

Question 7.
389 + ___ = 489
Answer:
389 + 100 = 489.

Explanation:
To find the missing addend we will subtract the addend from the sum. So 489-389 is 100. The missing addend is 100.

Question 8.
____ + 10 = 235
Answer:
225 + 10 = 235.

Explanation:
To find the missing addend we will subtract the addend from the sum. So 235-10 is 225. The missing addend is 225.

Question 9.
634 + ____ = 644
Answer:
634 + 10 = 644.

Explanation:
To find the missing addend we will subtract the addend from the sum. So 644-634 is 10. The missing addend is 10.

Question 10.
295 + ____ = 395
Answer:
295 + 100 = 395.

Explanation:
To find the missing addend we will subtract the addend from the sum. So 395-295 is 100. The missing addend is 100.

Question 11.
Jackson has 389 ants in his ant farm. He puts 10 more ants in the farm. How many ants are in his ant farm now?
_____ ants
McGraw Hill My Math Grade 2 Chapter 6 Lesson 3 Answer Key Mentally Add 10 or 100 29
Answer:
The number of ants on his farm is 399 farms.

Explanation:
Given that Jackson has 389 ants on his ant farm and he puts 10 more ants on the farm. So the number of ants on his farm is 389+10 by adding mentally it will be 8+1 = 9. So 389+10 = 399 ants.

Question 12.
Ben has 115 pennies. His dad gives him more pennies. Now Ben has 215 pennies. How many pennies did his dad give him?
_____ pennies

Answer:
Ben dad’s gave him 100 pennies.

Explanation:
Given that Ben has 115 pennies and his dad gives him more pennies. Now Ben has 215 pennies. So the number of pennies will be 215-115 which is 100 pennies.

Test Practice

Question 13.
Find the sum.
825 + 100 = _____
(A) 725
(B) 900
(C) 925
(D) 920
Answer:
C.

Explanation:
Here we need to add 100, so we will mentally add 100 to 825 which is 8+1 = 9. So 825+100 = 925.

Math at Home Practice saying a number and having your child add 10 or 100 to the number mentally.

Answer:
218+10 = 228.

Explanation:
Let the number 218 and we will add 10 mentally. Here, we will add tens place digits of 2 numbers 1+1 = 2. So 218+10 = 228.

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