All the solutions provided in McGraw Hill My Math Grade 3 Answer Key PDF Chapter 12 Lesson 6 Measure to Halves and Fourths of an Inch will give you a clear idea of the concepts.
McGraw-Hill My Math Grade 3 Answer Key Chapter 12 Lesson 6 Measure to Halves and Fourths of an Inch
One-half inch (\(\frac{1}{2}\)) is one of two equal parts of one inch. There are two half inches in one inch.
Measure It!
Measure the length of three connecting cubes to the nearest half inch.
1. Measure the length.
Line up an inch ruler so that one end of the first cube is at the 0 mark.
The length of the three cubes is greater than 2 whole inches but less than ____________ whole inches.
It measures to the first mark after 2 inches.
2. Write the length.
Write a number to represent the whole inches whole inches.
Write a fraction to represent the remaining part of an inch.
The length is closer to 2\(\frac{1}{2}\) inches than it is to 2 inches or 3 inches.
So, to the nearest half inch, the length is 
inches.
Answer:
The length of the three cubes is greater than 2 whole inches but less than 3 whole inches.
As it measures to the first mark after 2 inches. The measurement will be 2(\(\frac{1}{2}\)) inches.
Try It
Measure the length of the fish to the nearest quarter inch.
1. Measure the length.
The length of the fish is greater than 1 whole inch but less than ___________ whole inches.
It measures slightly shorter than spaces the third mark after 1 inch.
2. Write the length.
Write a number to represent the whole inches.
Write a fraction to represent the remaining part of an inch.
The length ¡s closer to 1\(\frac{3}{4}\) inches than it is to 1\(\frac{1}{2}\) inches or 2 inches.
To the nearest quarter inch, the length is inches.
Answer:
The length of the fish is greater than 1 whole inch but less than 2 whole inches.
To the nearest quarter inch, the length is 1\(\frac{3}{4}\) inches.
Talk About It
Question 1.
Mathematical PRACTICE Justify Conclusions Refer to the second activity. What is the length of the fish to the nearest half inch? How do you know?
Answer:
The length of the fish is nearest to 1\(\frac{1}{2}\) inches than 2 inches.
Practice It
Estimate. Then measure each length to the nearest \(\frac{1}{2}\)-inch.
Question 2.
Length: ______________
Answer:
The length of the given object is nearest to 2\(\frac{1}{2}\) inches.
Question 3.
Length: ______________
Answer:
The length of the given object is nearest to 2\(\frac{1}{2}\) inches.
Question 4.
Length: ______________
Answer:
The length of the given object is nearest to 3\(\frac{1}{2}\) inches.
Estimate. Then measure each length to the nearest \(\frac{1}{4}\)-inch.
Question 5.
Length: ______________
Answer:
The length of the given object is nearest to 4\(\frac{1}{4}\) inches.
Question 6.
Length: ______________
Answer:
The length of the given object is nearest to \(\frac{3}{4}\) inches.
Question 7.
Length: ______________
Answer:
The length of the given object is nearest to 3\(\frac{3}{4}\) inches.
Question 8.
Length: ______________
Answer:
The length of the given object is nearest to 4\(\frac{3}{4}\) inches.
Apply It
For Exercises 9 and 10, refer to the model airplane at the right. Fatima built the model to fly outdoors.
Question 9.
Measure the length of the airplane to the nearest half inch.
Length: _______________
Answer:
The length of the given object is nearest to 3\(\frac{1}{2}\) inches.
Question 10.
Measure the length of the airplane to the nearest quarter inch.
Length: _______________
Answer:
The length of the airplane is nearest to 3\(\frac{1}{4}\) inches.
Question 11.
Mathematical PRACTICE Be Precise Circle the object that, when measured to the nearest quarter inch, has a different length than when measured to the nearest half inch.
Answer:
The length of the key is 3 inches and the length of insect is 2\(\frac{1}{2}\) inches.
Question 12.
Mathematical PRACTICE Reason Explain why the length of the paper clip to the nearesit inch, half inch, and quarter inch are all the same number.
Answer:
The length of the paper clip is 2 inches. It is 2 inches for nearest inch, half inch, and quarter inch because the nearest length to it is 2.
Write About it
Question 13.
Can an object be 3 inches in length when measured to both the nearest inch and nearest half inch? Explain.
Answer:
Yes,let us assume the example of key whose length is 3 inches. The length of the key will be 3 inches for nearest inch, half inch, and quarter inch.
McGraw Hill My Math Grade 3 Chapter 12 Lesson 6 My Homework Answer Key
Practice
Question 1.
Measure the length to the nearest \(\frac{1}{2}\)-inch.
Length: ______________
Answer:
The length of the given object is 3\(\frac{1}{2}\) inches.
2. Measure the length to the nearest \(\frac{1}{4}\)-inch.
Length: _______________
Answer:
The length of the given object is \(\frac{3}{4}\) inches.
Problem Solving
Question 3.
Measure the length of the marker to the nearest half inch.
Length: _______________
Answer:
The length of the given object is 4\(\frac{1}{2}\) inches.
Question 4.
Mathematical PRACTICE Be Precise Measure the length of the spool of thread to the nearest quarter inch.
Length: _________________
Answer:
The length of the given object is \(\frac{3}{4}\) inches.
Vocabulary Check
Question 5.
How many half inches are in one inch?
Answer:
Two half inches will be there in one inch.
Question 6.
How many quarter inches are ¡n one inch?
Answer:
Four quarter inches will be there in one inch.
