周记800字高中

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21分之8除以7分之4怎么算的呢? 负8乘4分之21怎么算? 能简算简算:10分之3*(7分之5-21分之10)还有一个10分之9*3分之2+2分之1太谢谢你了 化简,求比值:21:49 1.6:2.4 8分之2.4 7分之3:9分之2 (+1)+(-2分之21)+(-3分之8)+(-9.5) 简便计算21.7-八分之五+8.3-八分之三 计算(8分之3-16分之7)/(-32分之21)写过程 9分之7+10分之3-9分之2+10分之17的简便计算(回答一定有满意) 用简便计算、 15分之2成4.69加3.21成10又15分之2加7.9除以1又13分之2 简便计算:【3/5乘(五又五分之二减去五分之二)除以七】乘7/13 -21.6+3-7.4+(-五分之二) 2乘4分之1加4乘6分之1加6乘8分之1加.98乘100分之1 怎么算 简便算法~ 二十一分之十三乘以十七加二十一分之十七乘以八 简便运算 怎么简便计算59*21 (59+21)x(96÷8)帮我脱式计算 (59+21)×(96÷8)帮我脱式计算 (59+21)*(96÷8)怎样简便用算, 59×21怎样简便运算? 9分之8-(9分之8-25分之9)简便算法 21又9分之7乘以7分之1简单算法 1/1×3+1/3×5+1/5×7+…1/17×19+1/19×21这道题如何简便运算?用算术法做!答对加50分! 1/1*3+1/3*5+1/5*7+.1/17*19+1/19*21怎么简便计算? 1/1*3 + 1/3*5 + 1/5*7 + …+ 1/17*19 + 1/19*21 如何计算 简便计算 1×3分之1+3×5分之1+5×7分之1+……+17×19分之1+19×21分之1 记住!是简便计算! 英语翻译 英语翻译Dear There`re always some things that let me in tears.I know that you didn't tell me anything,so it's just my guess and also I am not sure whether it's right or not.please believe me,i really like you Sometimes I can't express exactly wha 英语翻译ANIMAL PHOTO COMPETITIONRules of entry1.Those who enter the competition must be under the age of 18.2.To enter the competition you must send in three photograpgs of animals which you have taken yourself.Both you and a parent must sign the 英语翻译对不起,我不会讲太多英语,我们可以用中文交谈吗? 英语翻译1.Would you please pass me _______ mini-dictionary next to the radio?And I also need ______ colourful pencil to write something.A a ,a B the ,the C the,a D a,the2.What does the lady look like?----______A Shi is fine and patient B She like 它是19元6角用英语怎么说 入乡随俗用英语怎么说?