RIC-20175 ACM Measurement and Geometry (Yr 6) Using units of measurement 5
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Sub-str<strong>and</strong>: <strong>Using</strong> <strong>units</strong> <strong>of</strong> <strong>measurement</strong>—UUM – 5<br />
12:01 am 0001<br />
RESOURCE SHEET<br />
The 24-hour clock<br />
1:00 pm 1300<br />
1:00 am 0100<br />
24<br />
2:00 pm 1400<br />
2:00 am 0200 23 13<br />
3:00 pm 1500<br />
3:00 am 0300 12<br />
11 1<br />
4:00 pm 1600<br />
22<br />
4:00 am 0400<br />
14<br />
5:00 pm 1700<br />
10 2<br />
5:00 am 0500 6:00 pm 1800<br />
6:00 am 0600 21 9 3 15 7:00 pm 1900<br />
7:00 am 0700 8:00 pm 2000<br />
8 4<br />
8:00 am 0800 9:00 pm 2100<br />
20 16<br />
9:00 am 0900<br />
7 5<br />
6<br />
10:00 pm 2200<br />
10:00 am 1000 19 17<br />
11:00 pm 2300<br />
18<br />
11:00 am 1100 12:00 midnight 2400<br />
12:00 noon 1200<br />
What is 9:25 am in 24-hour time? Look at the 24-hour clock. 9:00 am is shown as 0900, so 9:25 am<br />
would be shown as 0925.<br />
What is 9:25 pm in 24-hour time? 9:00 pm is shown as 2100, so 9:25 pm would be shown as 2125.<br />
1. Write the following 12-hour times as 24-hour times.<br />
(a) 6:00 am<br />
(c) 12 noon<br />
(b) 4:40 pm<br />
(d) 12:00 midnight<br />
(e) 12:53 pm (f) 3:15 am<br />
©R.I.C. Publications<br />
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2. Write these 24-hour times as 12-hour times, using am or pm.<br />
(g) 2245 (h) 1007<br />
(i) 0455 (j) 1836<br />
CONTENT DESCRIPTION: Interpret <strong>and</strong> use timetables<br />
(k) 0005 (l) 2359<br />
3. What is the time period between these times <strong>of</strong> the same day?<br />
(a) 10:05 am <strong>and</strong> 1325<br />
(b) 1535 <strong>and</strong> 4:15 pm<br />
(c) 11:50 am <strong>and</strong> 2350<br />
(d) 1455 <strong>and</strong> 9:20 pm<br />
(e) 7:25 pm <strong>and</strong> 1955<br />
(f) 0430 <strong>and</strong> 4:10 pm<br />
Australian Curriculum Mathematics resource book: <strong>Measurement</strong> <strong>and</strong> <strong>Geometry</strong> (Year 6) R.I.C. Publications ® www.ricpublications.com.au 53
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