Quality Zone “One Question per Day” 2010-12-5:
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Round the following numbers to one decimal place: 2.71828, 57.65, 33.8820, 84.7500, 33.25000000001. Note: 1) All participants will receive a reward； 2) Please hide your replies; the method for doing this is: http://bbs.hcbbs.com/thread-492556-1-1.html. Do not edit the replies after posting them. 3) Answers: 2.7 57.6 33.9 84.8 33.3
Search for \"rounding\" on Baidu, and you will find Baidu Baike’s article on \"rules for numerical rounding\": http://baike.baidu.com/view/89189.htm. There is a simple mnemonic to help with this: for 4, round down; for 6, round up. For 5, look at the digit to its right – if there is a digit there, round up. If the digit to the right is 0, look at the digits to its left; round up if the number of digits there is odd, otherwise round down
2.7 57.7 33.9 84.8 33.8
2.71828 = 2.7; 57.65 = 57.6; 33.8820 = 33.8; 84.7500 = 84.8; 33.25000000001 = 33.3. There is a mnemonic for this: round up to the nearest whole number; if it’s 5, look at the digit following it. If there is no such digit, consider whether the preceding digit is odd or even – if it’s odd, round up by one, otherwise do not round up. If there is a digit after 5, round up by one directly. I think so, I can’t remember clearly.
I’m stunned – I mistook 33.88; never mind, it can’t be changed. Depressed
2.7\57.7\33.9\84.8\33.3
My answer: 2.7； 57.6 ； 33.9 ； 84.8 ； 33.2 (It seems to be rounded to five spouses)
2.7 57.6 33.9 84.8 33.2
2.7 57.7 33.9 84.8 33.3
2.71828 2.7 57.65 57.6 33..8820 33.9 84.7500 84.8 33.25000000001 33.3 Odd increments, even no increments – is that correct?
This post was last edited and replied to by lifayang21 on 2010-12-5 18:11: Reply 1# xu*ang309 2.7 57.6 33.9 84.8 33.2