Tuesday, June 16, 2015
Links to homework 1, due Wednesday 17 June 2015
Link for prime factorization and all factors, with practice examples.
Roman and Hindu-Arabic numerals, fractions and decimals.
Practice for Roman to Hindu-Arabic and vice versa, fractions and decimals.
Practice for time conversion.
The following problems are in the form minutes:seconds. If the answer gives more than 60 minutes, write the answer as hours:minutes:seconds. Answers to the question below are in the comments.
18:34
- 6:58
42:23
41:07
43:01
42:18
+42:17
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1 comment:
Borrow a minute to make 60 more seconds
17:94
- 6:58
______
11:36
The sums of the minutes and seconds separately are
208:66
66 seconds becomes 1:06 and added to the minutes we get
209:06
209 divided by 60 gives us 3 hours and 29 minutes so the final answer is 3:29:06.
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