We included HMH Into Math Grade 3 Answer Key PDF Module 12 Review to make students experts in learning maths.

Vocabulary

Choose the correct term from the Vocabulary box to complete the sentence.

Vocabulary
a.m.
elapsed time
midnight
minute
p.m.

Question 1.
__________ is the amount of time that passes from the start of an activity to the end of the activity.
Explanation:
the actual time taken
The formula for calculating elapsed time is elapsed time = end time – start time. Subtract the minutes and hours separately

Question 2.
The times after noon and before midnight are _________ times.
p.m.
Explanation:
Another convention sometimes used is that, since 12 noon is by definition neither ante meridiem (before noon) nor post meridiem (after noon)

Question 3.
A __________ is a unit used to measure short amounts of time.
minute
Explanation:
a period of time equal to sixty seconds or a sixtieth of an hour.

Question 4.
The times after midnight and before noon are ___________ times.
a.m.
Explanation:
then 12am refers to midnight at the start of the specified day (00:00) and 12pm to midnight at the end of that day (24:00).

Concepts and Skills

Question 5.
Charles wakes up for school at the time shown. At what time does he wake up? Write your answer using a.m. or p.m.

7 : 12 a.m.
Explanation:
In morning we say the time as a.m.
The times after midnight and before noon is called a.m.

Question 6.
Use Tools Tami arrives at the bookstore at 6:08 p.m. She leaves at 6:56 p.m. How many minutes was Tami at the bookstore? Name the strategy or tool you will use to solve the problem, explain your choice, and then find the answer.
48 minutes was Tami at the bookstore
Elapsed time.
Explanation:
6: 08 – 6: 56
Hours and minutes are subtracted separately
0 : 48

Question 7.
Select all that describe the time shown on the clock.

(A) thirty-four minutes after one
(B) thirty-four minutes after two
(C) thirty-nine minutes after one
(D) thirty-nine minutes after two
(E) twenty-one minutes before one
(F) twenty-one minutes before two
(C) thirty-nine minutes after one
(F) twenty-one minutes before two
Explanation:
This is before and after the time.

Question 8.
Erin has a workout planned for Saturday. She starts at 10:00 a.m. Complete the table to show the start time, end time, and elapsed time of each exercise.

Explanation:
the actual time taken
The formula for calculating elapsed time is elapsed time = end time – start time. Subtract the minutes and hours separately

Question 9.
Leo arrives at the library at 2:30 p.m. He leaves the library 75 minutes later. Draw jumps from the time Leo arrives at the library to the time he leaves the library. Place a point on the number line to show the time he leaves the library.