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Lesson Example Discussion Quiz: Class Homework

Step-3

Title: Time coversations

Grade: 6-a Lesson: S2-L1

Explanation: Hello Students, time to practice and review the steps for the problem.

Lesson Steps

Step	Type	Explanation	Answer
1	Problem	Convert the time given below \$21/14\$ minutes is equal to how many seconds.
2	Step	Write down the number of minutes you want to convert to seconds. In this case, we have	\$21/14\$ minutes
3	Hint	For every minute, there are 60 seconds according to the conversion factor	1 minute = 60 seconds
4	Formula:	Multiply the number of minutes by 60 \$ "seconds" / "minute" \$ to convert to seconds	Number of seconds = \$ 21/14 "minutes" times 60 "seconds" / "minute" \$
5	Step	Perform the multiplication	Number of seconds = \$ \cancel(21)^3/\cancel14^2 times 60 \$
6	Step	After cancellation we get	Number of seconds = \$ 3/\cancel2 times \cancel(60)^30 \$
7	Step	After cancellation we get	Number of seconds = \$ 3 times 30 \$
8	Step	Calculate the result	Number of seconds = 90 seconds
9	Step	So, \$21/14\$ minutes is equal to 90 seconds.
10	Sumup	Can you summarize what you’ve understood in the above steps?
11	Choice.A	This is not correct as we calculated that \$21/14\$ minutes is equal to 90 seconds	91 seconds
12	Choice.B	This is incorrect because it suggests that \$21/14\$ minutes is equal to 1.5 seconds, which is not the correct conversion	1.5 seconds
13	Choice.C	This is correct because it correctly states that \$21/14\$ minutes is equal to 90 seconds	90 seconds
14	Choice.D	This is incorrect because option B (1.5 seconds) is not the correct conversion; the correct conversion is 90 seconds	Both B and C
15	Answer	Option	C
16	Sumup	Can you summarize what you’ve understood in the above steps?

Step

Type

Explanation

Answer

Problem

Convert the time given below \$21/14\$ minutes is equal to how many seconds.

Step

Write down the number of minutes you want to convert to seconds. In this case, we have

\$21/14\$ minutes

Hint

For every minute, there are 60 seconds according to the conversion factor

1 minute = 60 seconds

Formula:

Multiply the number of minutes by 60 \$ "seconds" / "minute" \$ to convert to seconds

Number of seconds = \$ 21/14 "minutes" times 60 "seconds" / "minute" \$

Step

Perform the multiplication

Number of seconds = \$ \cancel(21)^3/\cancel14^2 times 60 \$

Step

After cancellation we get

Number of seconds = \$ 3/\cancel2 times \cancel(60)^30 \$

Step

After cancellation we get

Number of seconds = \$ 3 times 30 \$

Step

Calculate the result

Number of seconds = 90 seconds

Step

So, \$21/14\$ minutes is equal to 90 seconds.

Sumup

Can you summarize what you’ve understood in the above steps?

Choice.A

This is not correct as we calculated that \$21/14\$ minutes is equal to 90 seconds

91 seconds

Choice.B

This is incorrect because it suggests that \$21/14\$ minutes is equal to 1.5 seconds, which is not the correct conversion

1.5 seconds

Choice.C

This is correct because it correctly states that \$21/14\$ minutes is equal to 90 seconds

90 seconds

Choice.D

This is incorrect because option B (1.5 seconds) is not the correct conversion; the correct conversion is 90 seconds

Both B and C

Answer

Option

Sumup

Can you summarize what you’ve understood in the above steps?