All the solutions provided in McGraw Hill My Math Grade 3 Answer Key PDF Chapter 2 Check My Progress will give you a clear idea of the concepts.
McGraw-Hill My Math Grade 3 Chapter 2 Check My Progress Answer Key
Check My Progress Page No. 85-86
Vocabulary Check
Choose the correct word(s) to complete the sentence.
Associative Commutative Identity
mental math parentheses pattern
Question 1.
The ____ Property of Addition states that the order in which addends are added does not change the sum.
Answer:
Commutative
Explanation:
The Commutative Property of Addition states that the order in which addends are added does not change the sum.
Question 2.
A set of numbers that follow a certain order is a _____
Answer:
pattern
Explanation:
A set of numbers that follow a certain order is a pattern
Question 3.
You can use _____ to add numbers in your head.
Answer:
mental math
Explanation:
You can use mental math to add numbers in your head.
Question 4.
The ____ Property of Addition states that the way addends are grouped does not change the sum.
Answer:
Associative
Explanation:
The Associative Property of Addition states that the way addends are grouped does not change the sum.
Question 5.
____ show which numbers to add first.
Answer:
parentheses
Explanation:
parentheses show which numbers to add first.
Question 6.
The ____ Property of Addition states that the sum of any number and zero is that number.
Answer:
Identity
Explanation:
The Identity Property of Addition states that the sum of any number and zero is that number.
Concept Check
Make a ten or a hundred to add mentally.
Question 7.
Answer:
Explanation:
Tens and ones are taken apart and added separately
By expanded form we can add the numbers by rounding them to nearest tens
Question 8.
Answer:
Explanation:
Tens and ones are taken apart and added separately
By expanded form we can add the numbers by rounding them to nearest tens
Concept Check
Break apart the addends to add mentally.
Question 9.
Answer:
Explanation:
Tens and ones are taken apart and added separately
By expanded form we can add the numbers by rounding them to nearest tens
Identify and complete the number pattern.
Question 10.
573; 673; ____; 873
The number pattern is ____
Answer:
573; 673; 773; 873
The number pattern is add 100
Explanation:
The above pattern follows the add 100
673 + 100 = 773
Question 11.
2,930; ____ ; 2,950; 2,960
The number pattern is ____
Answer:
2,930; 2,940; 2,950; 2,960
The number pattern is add 10
Explanation:
The above pattern follows the add 10
2930 + 10 = 2940
Write the number in the place-value chart.
Question 12.
1,000 more than 2,491
Answer:
Explanation:
1,000 more than 2,491
2491 + 1000 = 3491
Question 13.
100 more than 8,762
Answer:
Explanation:
100 more than 8,762
8762 + 100 = 8862
Problem Solving
Question 14.
At a book sale, Emily buys 4 books. Paul buys 8 books. Genie buys 6 books. Use an addition property to find how many books Emily, Paul, and Genie buy altogether. Write the addition property.
Answer:
Explanation:
Emily buys 4 books. Paul buys 8 books.
4 + 8 = 12
Genie buys 6 books.
12 + 6 = 18
18 books Emily, Paul, and Genie buy altogether
Test Practice
Question 15.
On Monday, Lisa does 9 push ups. On Tuesday, she does 0 push ups. Which addition property can be used to find the number of push ups Lisa does altogether?
A. Identity Property
B. Commutative Property
C. Associative Property
D. Pattern Property
Answer:
A
Explanation:
On Monday, Lisa does 9 push ups.
On Tuesday, she does 0 push ups.
9 + 0 = 9
Is the identity property.
Check My Progress Page No. 105-106
Vocabulary Check
addend addition sentence estimate reasonable
regroup round sum unknown
Label each with the correct vocabulary word(s).
Question 1.
__________
Answer:
estimate
Explanation:
139 is estimated to 100
273 is estimated to 300
100 + 300 = 400
Question 2.
139 + 273 = 412
412 is close to the estimate of 400.
The answer is _______
Answer:
reasonable
Explanation:
139 + 273 = 412
412 is close to the estimate of 400.
The answer is reasonable
Question 3.
____________
Answer:
sum
Explanation:
when the addends are added the result is called as sum.
Question 4.
Answer:
Addends
Explanation:
The 2 numbers which we are adding are called addends
when the addends are added the result is called as sum.
Question 5.
Exchange 10 ones as 1 ten.
_______
Answer:
2 hundreds and 10 tens and 11 ones.
Explanation:
2 hundreds = 200
10 tens = 100
11 = ones. can also written as 1 ten and 1 ones.
Question 6.
153 to the nearest ten is 150.
153 to the nearest hundred is 200.
____________
Answer:
153 is rounded to 150 for tens
153 is rounded to 200 for hundreds
Explanation:
153 to the nearest ten is 150.
153 to the nearest hundred is 200.
Concept Check
Estimate. Round each addend to the indicated place value.
Question 7.
214 + 62; tens
____ + ____ = _____
Answer:
214 + 62 = 276
210 + 66 = 276
Explanation:
Tens and ones are taken apart and added separately
By expanded form we can add the numbers by rounding them to nearest tens
Question 8.
483 + 112;hundreds
____ + ___ = _____
Answer:
483 + 112 = 595
480 + 115 = 595
Explanation:
Tens and ones are taken apart and added separately
By expanded form we can add the numbers by rounding them to nearest tens
Use models to add. Draw the sum.
Question 9.
99 + 209 = ____
Answer:
99 + 209 = 308
100 + 208 = 308
Explanation:
Tens and ones are taken apart and added separately
By expanded form we can add the numbers by rounding them to nearest tens
Question 10.
316 + 284 = ____
Answer:
316 + 284 = 600
310 + 290 = 600
Explanation:
Tens and ones are taken apart and added separately
By expanded form we can add the numbers by rounding them to nearest tens
Question 11.
377 + 308 = ____
Answer:
377 + 308 = 685
380 + 308 = 688
Explanation:
Tens and ones are taken apart and added separately
By expanded form we can add the numbers by rounding them to nearest tens
Add. Check for reasonableness.
Question 12.
34 + 727 =
Estimate:
Answer:
Explanation:
30 + 720 = 750
Tens and ones are taken apart and added separately
By expanded form we can add the numbers by rounding them to nearest tens
Question 13.
528 + 149 =
Estimate:
Answer:
Explanation:
520 + 150 = 670
Tens and ones are taken apart and added separately
By expanded form we can add the numbers by rounding them to nearest tens
Question 14.
$193 + $619 =
Estimate:
Answer:
Explanation:
190 + 610 = 800
Tens and ones are taken apart and added separately
By expanded form we can add the numbers by rounding them to nearest tens
Problem Solving
Question 15.
Dory’s Farm has 468 apple trees and 224 pear trees. To the nearest ten, how many apple and pear trees are there altogether?
Answer:
690 apple and pear
Explanation:
Dory’s Farm has 468 apple trees and 224 pear trees.
To the nearest ten,
468 as 470
224 as 220
470 + 220 = 690
690 apple and pear trees are there altogether
Question 16.
There are 369 boys and 421 girls signed up for Adventure Camp this summer. How many campers are signed up in all?
Answer:
790 campers
Explanation:
There are 369 boys and 421 girls signed up for Adventure Camp this summer.
369 + 421 = 790
790 campers are signed up in all.
Test Practice
Question 17.
It costs $177 a night to stay at a hotel on the beach. The Taylors want to stay two nights in July. How much will it cost for two nights?
A. $244
B. $344
C. $354
D. $400
Answer:
C
Explanation:
It costs $177 a night to stay at a hotel on the beach.
The Taylors want to stay two nights in July.
177 + 177 = 354
354 it cost for two nights