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1、= = 0= = 4= = 5= = = ＝ －= ＋= 1= ＝ = ＝ = = 0.9－= 10－－= 12= 14= ＋＝ ＝ = 15= ＝ = ＝ 1.25168= ＝ (＋)4= －= ＝ = = = 15＝

2、21= 8－＝ = = 4＝ (＋0.5)(－0.5)= （＋）24= 24.06＋0.4= = ()30= 25= 6= 2.825＋122.5= 12.5322.5= 5－= 45101= 6= 27018= 1.25－0.25＋0.75= ＝ 18(＋＋)= 5.28―(0.28＋0.2)＝ ＋＝　　71.4＝　　 72.80.8＝ 0.77＋0.33＝ （＋）12＝　　0.

3、6＝　　 1.258＝ 10－0.9＝　　 　8.2＋0.54＋0.46＝　?。健? －＋＝ 　= 26.2626= 4.57＋6.43= 7.911－7.9= = = 0= = = 0= = 4= = 5= = = 2= 13= = 3= 36= = 56= 5=

4、 18= = 26= 2= = = 24= = ＋= = 8= ＋= 15= ＋= = 14= 1= 4= 3－1.95= －= = 27= 3= －= 8= ＋3= 6= 0= 6.30.07=

5、 26= = 1258= 6= = = ＋6= = 4= 0.5－= = 100= 88= ＋= 4= 12= 254= 10= 4= = 60= = 12= 8= 11= 10= = =

6、 = = 0= 60.5= 8.44.2= 5= = 2= = 5－= 1= 12= 1= = 28= 0= = －= = 245= = = －= 1－= 9= 636－198= 3.60.3

7、6= 714= 1－＋= 1＋= 1= 1= 1－= 375= 9－0.9= （＋）24= 720.4= 720.4= 24= 0.2－= 1＋= 2524＝4.20.2＝12－0.2＝ 1.258＝ 27＋68=　　　910－540=　　 1840=　　　　91070= 78－0.98=　　 38=　　　　　100.1=　　　　　0.812.5= 8.10.03=　　1.50.5=　　　 100.5＝ 0.

8、510＝ 410－210＝　　　?。健　　　?1.4＝　　　 72.80.8＝ 0.77＋0.33＝ （＋）12＝　　0.6＝　　1.258＝ 10－0.9＝　　 　8.2＋0.54＋0.46＝　?。健　。? 　= 26.2626= 4.57＋6.43= 7.911－7.9= 3.1432= 3＋－3＋= 10.130= 20.2－2= = 1.840.5= 1.5－1.50.2= 578＋216＝ 85.2－3.25＝ 3.2－＝

9、81＝ ＋＝ 22＝ 0.999＋0.99＝ = 18＋12＝ 82.5－3.25＝ 7＝ 3005-899= 7.25+2.75= 9.898＝ 0.12598 = = 5－= = 2－2= － = ＋= 　　 ＋= 12－= = 0.7公頃=（ ）平方米 4700毫升=（ ）立方分米 341－103= 2噸50千克=（ ）噸 1.2小

10、時(shí)=（ ）時(shí)（ ）分 13(2＋) 24.06＋0.4= = ()30= 25= 6= 2.825＋122.5= 12.5322.5= 5－= 45101= 6= 27018= 1.25－0.25＋0.75= 5/6+1/6= 5/6-6/2= 7/3-4/3= 7/4+2/1= 5/9+5/8= 1/3+5/6= 7/6+6/9= 1/2+1/3= 2/1-5/4= 3/4

11、+5/4= 4/5+6/5= 5/6+6/7= 1/71/5= 1/21/5= 5/6-1/2= 1/23/5= 301/3= 2/312= 3/55/6= 2/51/3= 1/2-1/6= 5/16-5/8= 1/3+1/63= 1/3+1/35= 1/3+1/99= 5/6+7/12= 9/20+4/5= 9/20+1/2= 7/12+1/2= 11/30+1/3= 10/42+6/7= 15/56+7/8= 5/6+1/3

12、= 5/6+1/4= 7/12+1/4= 1/4+1/5= 51/5 = 23/10= 301/2= 11/2= 1/23= 1/34 = 1/45= 1/56= 1/67= 1/78= 1/89= 1/910= 1/5-1/9= 1/2-1/3= 1/3-1/4= 1/4-1/5= 1/5-1/6= 1/6-1/7= 1/7-1/8= 1/8-1/9= 1/9-1/10= 1/3+1/4= 1/5+1/6= 1/7+1/8=