All the solutions provided in McGraw Hill My Math Grade 1 Answer Key PDF Chapter 8 Review will give you a clear idea of the concepts.

Vocabulary Check

Complete each sentence.

analog clock
digital clock
half hour
length
measure
minute
o’clock

Question 1.
A ________________ is a type of clock that only uses numbers to show time.
digital clock
Explanation:
A digital clock is a type of clock that only uses numbers to show time.

Question 2.
30 minutes past the hour is also called a _________________.
half hour
Explanation:
30 minutes past the hour is also called a half hour.

Question 3.
To find the length of an object, you can _______________ it.
measure
Explanation:
To find the length of an object, you can measure it.

Question 4.
You can measure how long an object is, or its ________________.
length
Explanation:
You can measure how long an object is, or its length.

Question 5.
An ______________ is a clock that uses an hour and minute hand.
analog clock
Explanation:
An analog clock is a clock that uses an hour and minute hand.

Question 6.
________________ is a word used to tell time.
o’clock
Explanation:
o’clock is a word used to tell time.

Question 7.
There are 60 seconds in 1 ______________.
minute
Explanation:
There are 60 seconds in 1  minute.

Concept Check

Question 8.
Order the objects by length. Write I for long, 2 for longer, and 3 for longest.  Explanation:
I for long is chalk
2 for longer is crayon
and 3 for longest is pencil

About how many long is each object?

Question 9.  Explanation:
The rope is 6 cubes long

Question 10.  Explanation:
The hammer is 8 cubes long

Write the time on the digital clock.

Question 11.
8 o’clock  Explanation:
The digital clock is showing the time 8 o’clock

Question 12.
half past 3  Explanation:
The digital clock is showing the time 3 o’clock

Problem Solving

Solve. Write the time on the clock.

Question 13.
Aaron has swimming practice at 7:00. It lasts 1 hour. What time does swimming practice end?  Explanation:
Aaron has swimming practice at 7:00. It lasts 1 hour.
7 + 1 = 8
so, the swimming ends at 8:00

Question 14.
The party starts at 4 o’clock. The party is over 1 hour later. What time does the party end?  Explanation:
The party starts at 4 o’clock.
The party is over 1 hour later
4 + 1 = 5
The party ends at 5:00

Test Practice

Question 15.
The hour hand is between 9 and 10. The minute hand is at 6. Which clock is it?  Explanation:
The hour hand is between 9 and 10.
The minute hand is at 6.
so, the time is 9:30

Reflect

Circle the object that is longer. Explain to a classmate how you found the answer.    