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5,小数乘法和除法,阶段小达标,(12),1,2,3,4,5,提示,:,点击 进入习题,1,填一填。,第,(1),题,8,分,其余每空,2,分,共,14,分,(1),在 里,填合适的数,,在 里,填合适的运算符号。,1.85,2.38,0.62,1.85,( ),10.28,(0.28,3.53),10.28,6.9,(2.35),6.9,0.5420.09,0.54,2.38,0.62,0.28,0.28,2.3,5,0.09,2,(2),给,18.60.4,5.80.5,添上括号,使它们符合下面的运算顺序。,除加乘 算式,(,),加除乘 算式,(,),加乘除 算式,(,),(18.60.4,5.8)0.5,18.6(0.4,5.8)0.5,18.6(0.4,5.8)0.5,B,2,选一选。,(,每题,3,分,共,9,分,),(1)489.9,的简便方法是,(,),。,A,489,480.9,B,4810,480.1,C,509.9,29.9,D,4810,0.1,(2),要使,3.7,6.3,82.5,,里,应填,(,),。,A,0.825,B,8.25,C,82.5,D,825,(3)0.790.25,0.794,,里应填,(,),。,A,B,C,D,无法确定,B,C,3,计算下面图形的面积。,(6,分,),6.45.3,6.49.42,64(cm,2,),4,脱式计算,能简算的要简算。,(16,分,),12.58,6.4,1.42,3.6,5.89.7,0.35.8,12.58,6.4,1.42,3.6,(12.58,1.42),(6.4,3.6),14,10,4,5.89.7,0.35.8,5.8(9.7,0.3),5.810,58,841.02,84(1,0.02),841,840.02,84,1.68,85.68,7.7520(3.24,3.04) 841.02,7.7520(3.24,3.04),7.75200.2,7.75100,775,5,解决问题。,(,共,15,分,),(1),男子,110,米栏是由,110,米的跑道和跑道上面的,10,个跨栏组成的。从起点到第,1,栏是,13.72,米,第,10,栏到终点是,14.02,米,第,1,栏到第,10,栏,每两栏之间的距离是相等的。你知道每相邻两栏之间的距离是多少米吗?,(7,分,),(110,13.72,14.02)9,9.14(,米,),答:每相邻两栏之间的距离是,9.14,米。,(2),某玩具店售卖一款玩具汽车。上午卖出,18,辆,下午卖出,32,辆,下午比上午多卖,128.8,元。每辆玩具汽车多少元?全天总共卖出多少元?,(8,分,),128.8(32,18),9.2(,元,),答:每辆玩具汽车,9.2,元。,9.2(18,32),460(,元,),答:全天总共卖出,460,元。,
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