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9.02 Hours, minutes and seconds


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Can you skip count by 6s?


Example 1

Complete this pattern by skip counting by 6s.


Worked Solution
Create a strategy

Add 6 to each number to find the next number.

Apply the idea
\displaystyle 6+6\displaystyle =\displaystyle 12Add 6 to 6
\displaystyle 18+6\displaystyle =\displaystyle 24Add 6 to 18
\displaystyle 24+6\displaystyle =\displaystyle 30Add 6 to 24
\displaystyle 36+6\displaystyle =\displaystyle 42Add 6 to 36
\displaystyle 42+6\displaystyle =\displaystyle 48Add 6 to 42

The completed sequence is: 6,\,12,\,18,24,\,30,\,36,\,42,\,48,\,54,\,60

Idea summary

We can skip count to complete a pattern.

Hours, minutes, and seconds

Seconds, minutes, and hours all are units of time. It takes:

  • 60 seconds to make up 1 minute,

  • 60 minutes to make up 1 hour.

Let's look at how to convert between seconds, minutes, and hours.

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Example 2

Write the missing number in the box.

There are seconds in 1 minute.

Worked Solution
Create a strategy

Recall how many seconds are in 1 minute.

Apply the idea

There are 60 seconds in 1 minute.

Idea summary

Time conversions:

\begin{aligned} 1 &\text{ Week } &=&& 7 &\text{ Days} \\ 1 &\text{ Day } &=&& 24 &\text{ Hours} \\ 1 &\text{ Hour } &=&& 60 &\text{ Minutes} \\ 1 &\text{ Minute } &=&& 60 &\text{ Seconds} \end{aligned}



reads and records time in one-minute intervals and converts between hours, minutes and seconds

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