All the solutions provided in McGraw Hill My Math Grade 4 Answer Key PDF Chapter 4 Check My Progress will give you a clear idea of the concepts.
McGraw-Hill My Math Grade 4 Chapter 4 Check My Progress Answer Key
Check My Progress Page No. 221-222
Check My Progress
Vocabulary Check
Question 1.
Match each definition to the corresponding vocabulary word.
Answer:
Concept Check
Multiply. Use basic facts and patterns.
Question 2.
2 × 60 = ___
Answer:
Multiplication of 2 with 60 then you get 120.
2 x 60 = 120.
Question 3.
9 × 600 = ___
Answer:
Multiplication of 9 with 600 then you get 5,400
9 x 600 = 5,400.
Question 4.
6 × 4,000 = ____
Answer:
Multiplication of 6 with 4,000 then you get 24,000.
Estimate. Round to the greatest place value. Circle whether the estimate is greater than or less than the actual product.
Question 5.
greater than
less than
Answer:
423 rounded to the greatest place value is 420.
6 x 420 = 2,520
Question 6.
greater than
less than
Answer:
1,987 rounded to the greatest value is 1,990.
1,990 x 5 = 9950.
Draw an array or area model to multiply.
Question 7.
2 × 15 = ___
Answer:
The array of 2 x 15 is
2 x 15 = 30.
Question 8.
3 × 19 = ____
Answer:
The array of 3 x 19
3 x 19 = 57.
Problem Solving
Question 9.
Grasshoppers can jump about 20 times their length. About how far could the grasshopper below jump?
_____
Answer:
Given that,
Grasshoppers can jump about 20 times their length.
The length of the Grasshoppers is 4 cm.
So, 4 x 20 = 80 cm.
Therefore the grasshopper jump 80 cm.
Question 10.
There are 21 boxes of markers in the art room. Each box holds 8 markers. How many markers are in the art room?
Answer:
Given that,
There are 21 boxes of markers in the art room.
Each box holds 8 markers.
So, 21 x 8 = 168.
Therefore there are 168 markers in the art room.
Test Practice
Question 11.
To find the product of 2 × 200, Julia used the basic fact 2 × 24. How many zeros should she include in the product of 2 × 200?
A. 1
B. 2
C. 3
D. 4
Answer:
The number of zeros in 2 x 200 is 0.
2 x 200 = 400.
Option B is the correct answer.
Check My Progress Page No. 253-254
Vocabulary Check
Question 1.
Circle the example that correctly shows how to use the Distributive Property to find the product of 5 × 15.
(5 × 10) + (5 × 5)
(5 × 10) × (5 × 15)
(5 × 10) × (5 × 15)
(5 × 10) + (5 × 15)
Answer:
Distributive Property of 5 x 15 is
(5 x 10) + (5 x 5).
The circle one is the correct answer.
Question 2.
Explain how to use partial products to multiply.
Answer:
To use the partial products, find the products for the ones, tens and so on separately and add then together.
Example is 12 x 5 is (10 x 5) + (2 x 5).
Question 3.
When you use place value to exchange equal amounts when renaming a number, what are you doing?
Answer:
When you use place value to exchange equal amounts when renaming a number, we use regrouping.
Concept Check
Multiply. Check for reasonableness.
Question 4.
Answer:
Multiplication of 23 with 2 then you get 46.
23 x 2 = 46.
Question 5.
Answer:
Multiplication of 227 with 8 then you get 1,816.
227 x 8 = 1,816.
Question 6.
Answer:
Multiplication of 45 with 7 then you get 315.
45 x 7 = 315.
Question 7.
Answer:
Multiplication of 612 with 4 then you get 2,228.
612 x 4 = 2,448.
Problem Solving
Question 8.
The table shows prices of items at an electronics store.
How much would it cost to buy 3 battery packs and 3 copper wires?
Answer:
Given that,
The cost of battery pack is $13.
The cost of Coper wire is $22.
The cost for 3 battery is $13 x 3 = $39.
The cost for 3 copper wires is $22 x 3 = $66.
Therefore the cost to buy 3 battery packs and 3 copper wires is $39 + $66 = $105.
Question 9.
Each campsite needs the number of lanterns shown below. How many lanterns are needed for 48 campsites?
Answer:
Given that,
The number of lanterns shown below is 3.
The number of lanterns are needed for 48 campsites is 3 x 48 = 144.
Therefore there are 144 lanterns for48 campsites.
Question 10.
There are 1,440 minutes in a day. How many minutes are in 7 days?
Answer:
Given that,
There are 1,440 minutes in a day.
The number of minutes for 7 days is 1,440 x 7 = 10,080.
Therefore there are 10,080 minutes in 7 days.
Test Practice
Question 11.
Mohammed used an area model to show 4 × 35.
What is the missing number?
A. 30
B. 5
C. 30
D. 50
Answer:
The missing number is 30.
Option A is the correct answer.