All the solutions provided in McGraw Hill My Math Grade 3 Answer Key PDF Chapter 4 Check My Progress will give you a clear idea of the concepts.
McGraw-Hill My Math Grade 3 Chapter 4 Check My Progress Answer Key
Check My Progress Page No. 217-218
Write the letter of the word that matches each definition or example.
Answer:
Explanation:
I wrote the numbers to match the words in the left to their definition or example in the right.
Concept Check
Algebra Circle equal groups. Find the unknown.
Question 10.
2 groups of 4 = 
2 groups of 4 = ____
Answer:
2 groups of 4 = 8
Explanation:
2 groups of 4 =
Use repeated
4 + 4 = 8
So, 2 groups f 4 is 8.
Question 11.
4 groups of 5 =
4 groups of 5 = ____
Answer:
4 groups of 5 = 20
Explanation:
4 groups of 5
Use repeated addition
5 + 5 + 5 + 5 = 20
So, 4 groups of 5 = 20.
Use repeated addition to multiply.
Question 12.
6 × 2 = ____
___ + ___ + ___ + ___ + ___ + ___ = ____
Answer:
6 x 2 = 12
2 + 2 + 2 + 2 + 2 + 2 = 12
Explanation:
6 x 2 = 12 is multiplication sentence
The addition sentence is 2 + 2 + 2 + 2 + 2 + 2 = 12.
Question 13.
2 × 5 = ____
___ + ___ = ____
Answer:
2 x 5 = 10
5 + 5 = 10
Explanation:
2 x 5 = 10 is the multiplication sentence
The addition sentence is 5 + 5 = 10.
Write an addition sentence and a multiplication sentence to show equal rows.
Question 14.
____ + ___ + ___ = ____
____ × ____ = ____
Answer:
4 + 4 + 4 = 12
3 x 4 = 12
Explanation:
There are 3 rows of counters
Each row has 4 counters
3 rows of 4 counters is
3 x 4
Use repeated addition
4 + 4 + 4 = 12
3 x 4 = 12
So, the addition and multiplication sentence are 4 + 4 + 4 = 12 and 3 x 4 = 12.
Question 15.
____ + ____ + ___ + ___ = ____
____ × ____ = ____
Answer:
5 + 5 + 5 + 5 = 20
4 x 5 = 20
Explanation:
There are 4 rows of squares
Each row has 5 squares in the given array
4 rows of 5 squares
4 x 5
Use repeated addition
5 + 5 + 5 + 5 = 20
4 x 5 = 20
So, the addition and multiplication sentence are 5 + 5 + 5 + 5 = 20 and 4 x 5 = 20.
Problem Solving
Question 16.
Seven tigers each make 4 paw prints. How many paw prints are there altogether? Write a multiplication sentence with a symbol for the unknown. Then solve.
Answer:
7 x 4 = ?
7 x 4 = 28
Explanation:
Seven tigers each make 4 paw prints
7 groups of 4
Use repeated addition
4 + 4 + 4 + 4 + 4 + 4 + 4 = 28
So, the multiplication sentence that solves the problem is 7 x 4 = 28.
Question 17.
Adult tickets to the talent show cost $6. How much will 4 adult tickets cost? Draw an array to solve. Then write two multiplication sentences.
Answer:
Explanation:
Adult tickets to the talent show cost $6
We need to find the cost of 4 adult tickets
I drew an array to solve
4 rows of 5 squares n each row
The multiplication sentence that solves the problem is
4 x $6 =
Use repeated addition
6 + 6 + 6 + 6 = 24
So, 4 x 6 = 24 and 6 x 4 = 24 are the two multiplication sentences.
Test Practice
Question 18.
Which of the following number sentences is related to the addition sentence 5 + 5 + 5 = 15?
A. 3 × 5 = 15
B. 3 + 5 = 8
C. 15 – 5 = 10
D. 5 + 3 = 8
Answer:
A. 3 × 5 = 15
Explanation:
The given addition sentence is 5 + 5 + 5 = 15
In the above addition sentence there are 3 equal groups of 5
So, the related multiplication sentence is 3 x 5 = 15.