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,#,学 海 无,涯,5,3,1,10,=,12,72,5,=,3,3,=,6,12,5,=,3,24,2,=,10,1,=,134,1,4-,2,=,6,5,4=,9,3,2,9=,8,3,12=,3,2,9=,8,5,32=,5,3,9,4,=,4,5,16=,1,2,=,59,1,0=,6,5,12=,7,3,12,14,=,45,3,=,5,9,7,=,3,10,2,9,=,18,1,=,6,4,11,=,8,8,3,3,11,4,3,16,=,3,1,=,1,2,=,9,8,8,2,4,5,17,16,3,10=,5,1,=,1,8,3,1,5,9,4,8,2,6,1,4,5,=,2,=,8,1,16,=,25,4,100=,=,4,5,3,=,3,1,=,82,8,3,12=,1,3,0=,=,8,3,12=,学 海 无 涯 5 3 110=1272 5 =3 3,2,学 海 无,涯,3,1,0=,45,1,2,=,6,5,12=,7,3,1,2,14,=,5,45,3,=,18,7,9,=,3,10,2,9,=,4,25,100=,18,1,=,6,4,11,=,11,4,16,17,9,=,4,5,3,=,45,1,2,=,6,5,12=,7,3,1,2,14,=,45,3,=,5,18,7,9,=,3,10,2,9,=,4,25,100=,18,1,=,6,4,11,=,11,4,16,17,9,=,4,5,3,=,8,5,32=,5,3,=,94,5,1,=,94,4,5,16=,8,1,16,=,1,2,5,9,=,5,3,10,=,12,72,5,=,8,8,3,3,=,8,3,16,=,6,12,5,=,3,24,2,=,10,1,=,134,4,2,1,=,5,3,10=,2学 海 无 涯 31 0=451 2 =65 1,3,学 海 无,涯,6,5,4=,6,14,5,=,3,9,2,=,3,2,9=,5,45,3,=,7,9,=,3,1,=,1,18,8,2,18,6,=,2,9,=,3,12=,4,11,3,10,8,11,4,25,4,100=,18,1,=,6,4,11,=,11,4,16,17,9,=,4,5,3,=,3,1,=,82,8,3,12=,3,1,0=,3,1,0=,1,2,6,4,5,=,5,12=,7,3,1,2,14,=,5,45,3,=,18,7,9,=,3,10,2,9,=,25,4,100=,=,16,17,9,=,3,5,4,=,45,1,2,=,6,5,12=,7,3,1,2,14,=,5,45,3,=,18,7,9,=,3,10,2,9,=,6,5,12=,7,3,1,2,14,=,3,45,5,=,3学 海 无 涯 65 4=614 5=392 =3,3,2,=,8,4,学 海 无,涯,18,7,9,=,3,10,2,9,=,25,4,100=,1,18,6,=,4,11,11,4,=,8,3,12=,3,1,0=,5,3,=,94,5,1,=,94,4,5,16=,8,1,16,=,1,2,5,9,=,3,5,10,=,5,72,12,=,88,3,3,=,8,3,16,=,6,12,5,=,24,3,2,=,10,1,=,134,1,4-,2,=,2,5-,3,9=,6,3,1,-,8,2,=,3,3,8,12=,1,0=,3,2,9=,5,5,3,10=,6,5,4=,6,1,4,5,=,9,2,3,=,2,3,9=,3,1,8,8,2,=,3,12=,3,1,0=,4,5,1,2,=,32=84学 海 无 涯 18 7 3102 9 =,=,5,=,3,10,10,5,学 海 无,涯,6,5,12=,7,3,12,14,=,45,3,=,5,25,4,100=,18,1,=,6,4,11,=,11,4,16,17,9,=,4,5,3,=,3,1,=,82,8,3,12=,3,1,0=,18,7,9,=,3,10,2,9,=,45,1,2,=,5,6,12=,7,3,1,2,14,=,45,3,=,5,18,7,9,=,2,9,25,4,100=,18,1,=,6,4,11,=,11,4,16,17,9,=,4,5,3,=,5,4,8,32=,5,16=,8,1,16,=,1,2,=,59,3,12,72,5,=,8,8,3,3,=,8,3,16,=,6,12,5,=,5,3,=,94,5,1,9,4,=,3,24,2,=,10,1,=,134,1,4,2,=,=5=310105学 海 无 涯 65 12= 7,6,6,写出,下,面各数的倒数。,3,/4,0,6,学 海 无,涯,5,3,10=,6,5,4=,6,14,5,=,3,9,2,=,3,2,9=,3,1,=,82,8,3,12=,3,1,0=,45,1,2,=,5,12=,7,3,1,2,14,=,5,45,3,=,18,7,9,=,3,10,2,9,=,25,4,100=,18,1,=,6,4,11,=,11,4,16,17,9,=,4,5,3,=,5,4=,8,3,12=,8,3,16,=,25,4,100=,18,1,=,6,4,11,=,11,4,2,9,3,10,=,1,/,9,1,25,/,1,3,1,2,/,3,1,/,4,5,/1,8,2,/,5,4,/,7,7,/,5,7,/,9,3,/,4,6,/,5,1,/,5,66写出下面各数的倒数。3/406学 海 无 涯 53 1,6,分米,一,台冰箱的容积约,是,15,0,（,）。,3,、,一个,长,方,体,底,面积,是,60,7,2,、,棱长为,1,分米的正方体，,体积,是,（,）。,3,、,棱长为,1,米的正方,体,，,体,积是（,）。,4,、,1,升,=,（,5/8,1,毫,升,=,（,8/9,厘米,5/11,1,立,方米,=,（,填空方分米,1,、棱,长,为,1,厘米的正方,体,720,立方厘米,=,（,体积,是,(),。,方分米,填上,合,适的单位。,一,苹,果,的,体,积,约,是,120,（,）。,（,）,。,一个,文,具盒的体积约,是,0.35,一,个,西,瓜,的,体,积,约,是,8,（,）。,）,立,方（,）,。,一个讲台的,体积,约,是,0.6,计算,体,积。,1,、一个,长,方体,，,长,20,厘,米,，,宽,12,厘米，高厘米。,2,、一个,正,方体,，,棱长是,6,分,学 海 无,涯,）,立方（,）。,个火柴,盒,的,体,积约,是,12,）,立,（,）。,个墨水,瓶,的,容,积约,是,60,）,立,（,）。,个热水,瓶,的,溶,剂约,是,2,（,）。,一块橡皮的体积,约,是,10,（,）。,一,本词典的体积约,是,90,0,米。,分米一 台冰箱的容积约是 150（）。3、一个长方体底面积,7,121/4=,161/2=,4/51/107/12=,8,学 海 无,涯,立方,厘,米，高,7,厘米。,1/33=,1/93=,5/22=,28.51.5=,428=,81/4=,4/52=,1/52/3=,算一,算,。,61/2=,77/5=,1,21/2=,3/,44=,直接,写,得数,3/112=,7/96/5=,3/45/6=,4,、,一个长方,体,，,底面是,边,长,32/9=,1/5+1/4=,3/71=,为,2,平方,分,米的正方,形,，,高,5,9/1612=,9/43/2=,5/87/15=,分米。,107/15=,5/185/18=,02/3=,3/416=,8/32=,8/159/16=,77/10=,6/139=,4/52/3=,43/13=,5/810=,215/14=,8/156=,练一练,121/4= 161/2= 4/,8,学 海 无,涯,5/94/58/27=,8/117/83/8=,3/7141/3=,1,、,计算题,9,3/7 ,49/9,-,4/3,12 5/6 ,2/9,3,1,、计算,4.8,5/4,+,1/4,4/7 ,5/9,+ 3/7 ,5/9,5/2,-,（,3/2,+ 4/5,）,学 海 无 涯 5/94/58/27=,9,7/8 +,（,1/8,+,1/9,）,2,、简算,2,3,9,9,20,11,(10,5,),4,65,2,4,2,55,1,1,1,1,2,15,32,5/9,3/10=,10,直接,写,得数,学 海 无,涯,1/2,4/7=,7/92/3,=,2/52/5,=,5/9,3/9=,5/7,2/5=,3/4,2/5=,5/63/5,=,4/712,=,2,、计算,3/4 ,8/9,-,1/3,7 ,5/49,+,3/14,84/5+8 ,11/5,31 ,5/6,5/6,7/8 + （ 1/8 + 1/9 ）2、简算(10 5,10,学 海 无,涯,5/9 18 ,14,2/7,4/5 ,25/16,+,2/3,3/4,148/75/6,12/15,17/32 ,3/4,9/24,45 2/3 + 1/3 ,15,7/19 +,12/19,5/6,8/7 ,21/16,+,1/2,101 ,1/5, 1/5 ,21,6,7,5,6,11,8,12,11,1,5,1,1,2,12,23,百,分,之,三,十,11,5/9,3/9=,5/7,2/5=,5/9,3/9=,5/7,2/5=,1,、写出,下,面的百分数,百 分,之,十 五 （,）,学 海 无 涯 5/9 18 14 2/74/5,11,60%=（,）,35%=（,）,12,学 海 无,涯,（,）,32%=（,）,49%=（,）,11%=（,）,百分,之,十四点,六,（,）,2,6%=（,）,12.5%=（,）,29%=（,）,百分,之,零点四（,）,45 %=（,）,24.9%=（,）,53%=（,）,2,、,把下,面,小数分数化,成,95%=（,）,13.5%=（,）,49%=（,）,百分数,68%=（,）,29.7%=（,）,42%=（,）,0.35=（,）%,37%=（,）,15.1%=（,）,17%=（,）,1.02=（,）%,18%=（,）,46.2%=（,）,1=（,）%,把百,分,数化成分数,0.012=（,）%,1,、,把下,面,百分数化成,小,40.5%=（,）,1,、口答,3/5=（,）%数,12%=（,）,2,、,（,1,）,8,是,5,的百分之,7/8=（,）%,15%=（,）,28%=（,）,几？,13/10=（,）%,25%=（,）,4.5%=（,）,1/5=（,）%,16%=（,）,25.5%=（,）,3,、把百,分,数化成分数,79%=（,）,24.0%=（,）,60%=（ ） 35%=（ ） 12学 海 无 涯,12,3.,5,7,63/8=,27/,2,03/4,=,13,学 海 无,涯,（,2,）,5,是,8,的百,分,之,几？,3,、求出,下,面的商,，,并且所得,的商,化,成百分数。,4,、,3,8,2,0,1,6,22.414,3,、,一,个田径队有男生,20,人，,女生,15,人，男生人数,是,女,生人,数,的百分之几？,1/74=,1/520/3=,4,、,一,个田径队有男生,20,人，,5/824/25=,女,生,15,人,，,女生人数是,男,生7/123/14=,人数,的,百分之几？18/9= 4/77/25=,3/827=,5/93/10=,1/55=,395/13=,2/70=,2/75=,81/4=,1/,23,=,2/51/10=,3/,46,=,5/6,4/3,=,2,/,3,3/4,=,3.5763/8= 27/ 203/4=13学 海,13,（,2,）,5,比,8,少百分之,几,？,每件成本降低了百分,之,1,/,9,2/3,=,14,学 海 无,涯,1,/,4,1/3,=,1,4/9,=,1,24/7,=,7,1,4,=,3,/,5,11/5,=,7/1,57/3,=,2,04/5,=,22.414,93/2,4/,520,=,18,3/8,5/6=,1,、口答,05/7=,2,、,（,1,）,8,比,5,多百分之,7/127/4,=,几？,2,、,求出下面的,商,，,并且,所,得,的商,化,成百分数。,3012,4.59,几？,8,19/5,=,4,411/10=,2/1,02/7,=,6,3/8,=,4,、,某厂的一种,产,品,，,原,来每,21/1,03/5,=,件,成,本,96,元,，,技,术革新,后,，,8/2,72/9,=,每件,成,本降低到了,8,4,元，,5,/,8,2/3,=,（2）5 比 8 少百分之几？每件成本降低了百分之1,14,5/83/8=,14/157/5=,4/510=,15,7/905=,101/4=,8/54/5=,1/24=,5/168/15=,3/251/10=,11/4=,1/64/9=,21/207/3=,1/25/8=,4/96=,1/24=,1/47/3=,1/53/20=,7/416=,1/103/5=,3/8,5/6=,9/103/5=,3/53/4=,05/7=,8/114/9=,422/3=,21/1,03/5,=,3/161/2=,1/32/3=,8/2,72/9,=,8/53/4=,42/57/10=,353/14=,122/3=,563/7=,2/73/7=,6/131/2=,125/8=,72/7=,1/63=,7/95/14=,6/73=,5/83/8=,6/1313/4=,14/157/5=,学 海 无,涯,21/207/3=,123/7=,6,1/7=,3/10,2=,5,4/15=,24,3/8=,15,2/3=,1/8,4=,9,2/27=,100,3/5=,7/9,3/4=,6/7,5/6=,2,7/164/5=,8/99/8=,5/83/8= 14/157,15,77,16,77/13=,3/251/10=,1/6,8/15=,3/53/4=,422/3=,1/32/3=,42/57/10=,7/95/14=,6/1313/4=,353/14=,9/25,5/6=,12/13,1/4=,2,2/3=,3/4,3/5=,2,1,77,5,+,5,4,-,2,5,1,8,+,8,1,2,9,+,9,1,1,33,6,+,6,2,-,1,9,1,1,2,12,10,+,10,7,-,5,2,1,5,+,5,4,-,2,学 海 无,涯,5/7,4/5=,120,2/3=,1/3,0=,4,/,5,2=,5/11,2/3=,8/9,2/6=,7,1/12=,600,7/12=,5/6-1/3=,5/3+7/9=,3/,53=,6/134=,8/15,10=,8/56=,3/86=,3/515=,3/46=,71/14=,153/5=,204/5=,8/92/3=,204/5=,153/5=,8/9,2/3=,3/4,16=,5,/,9,5=,9,3/5=,2/33/2=,1/2+1/3=,2/33=,771677/13= 3/25,16,63/8=,2,1,4,=,05/7=,6/131/2=,17,学 海 无,涯,5/45/8=,2/330=,402/5=,15/12=,1/31/3=,2/52=,5/84/5=,264/13=,1/520/3=,5/824/25=,7/123/14=,18/9=,4/77/25=,3/827=,5/93/10=,1/55=,3/,511/5,=,7/1,57/3,=,2,04/5,=,4/,520,=,21/1,03/5,=,8/2,72/9,=,5/,82/3,=,1/,92/3,=,7/127/4,=,63/8=,5/83/8=,14/157/5=,8/54/5=,3/251/10=,21/207/3=,1/24=,5/215/6=,395/13=,计算,下,列各题,7/416=,212/7=,1/74=,81/4=,2/51/10=,5/64/3=,2/,33/4,=,27/ 2,03/4,=,1/,41/3,=,14/9,=,1,24/7,=,8,19/5,=,4,411/10=,2/1,02/7,=,93/2,3/8,5/6=,9/103/5=,8/114/9=,3/161/2=,8/53/4=,122/3=,63/8= 214=05/7= 6/131/,17,2,2,/,3,=,3/251/10=,3/515=,18,1/63=,3/53/4=,422/3=,1/32/3=,42/57/10=,563/7=,125/8=,7/95/14=,6/1313/4=,4/510=,123/7=,7/164/5=,8/99/8=,77/13=,6,1,/,7,=,3,/1,0,2=,5,4/15=,24,3/8=,15,2/3=,1,/,8,4=,9,2/27=,100,3/5=,7/9,3/4=,6/7,5/6=,9/25,5/6=,12/13,1/4=,学 海 无,涯,3/4,3/5=,2,1,5,+,5,77,4,-,2,5,1,8,+,8,1,2,9,+,9,1,1,33,6,+,6,2,-,1,9,1,1,2,12,10,+,10,7,-,5,5/7,4/5=,120,2/3=,1/3,0=,4,/,5,2=,5/11,2/3=,8/9,2/6=,7,1/12=,600,7/12=,5/6-1/3=,5/3+7/9=,3/,53=,6/134=,8/15,10=,8/56=,3/86=,22/3=3/251/10= 3/515= 181/6,18,5/45/8=,101/5=,19,学 海 无,涯,3/46=,2/330=,71/3=,41/3=,71/14=,402/5=,8/96=,41/4=,153/5=,15/12=,4/1512=,21/2=,204/5=,1/31/3=,3/85=,82/3=,8/92/3=,2/52=,6/139=,5/123=,204/5=,5/84/5=,5/810=,61/4=,153/5=,264/13=,8/156=,2/31/5=,8/92/3=,5/215/6=,1/25=,4/92/3=,3/4,16=,212/7=,4/52=,8/34=,5/,9,5=,算一,算,。,1/44=,1/33/4=,9,3/5=,14=,算一,算,。,5/61/4=,2/33/2=,105=,41/2=,7/1,27=,1/2+1/3=,73=,22/3=,5/77/5=,2/33=,11/4=,21/3=,6/53=,5/45/8= 101/5= 19学,19,7/96/5=,20,学 海 无,涯,101/2=,255/6=,5/64/3=,63/5=,63/4=,61=,63/2=,65/2=,31/4=,62/9=,44/9=,41/3=,答算,一,算。,3/,44=,1/5+1/4=,9/43/2=,5/185/18=,8/32=,2/54=,4/77/4=,1008/15=,3/75/9=,128/5=,2/34/15=,5/1215/4=,6/253/10=,7/203/10=,7/96/5= 20学 海 无 涯 101,20,
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