文档介绍：该【2015年五年级下册分数计算题(含加减法-分数方程、简便计算) 】是由【青山代下】上传分享，文档一共【14】页，该文档可以免费在线阅读，需要了解更多关于【2015年五年级下册分数计算题(含加减法-分数方程、简便计算) 】的内容，可以使用淘豆网的站内搜索功能，选择自己适合的文档，以下文字是截取该文章内的部分文字，如需要获得完整电子版，请下载此文档到您的设备，方便您编辑和打印。:..2015年五年级下册分数计算题(含加减法-分数方程、简便计算)计算题练一一、直接写出得数。1.$ rac{1}{10}- rac{1}{20}= rac{1}{20}$2.$ rac{1}{2}= rac{1}{4}+ rac{3}{4}$3.$ rac{172}{5}=34 rac{2}{5}$4.$9-9=0$5.$1- rac{12}{5}= rac{1}{5}+ rac{2}{5}$6.$ rac{1}{5}+ rac{1}{2}- rac{1}{5}= rac{1}{3}+ rac{5}{3}-2=2$7.$5+10=15$二、解方程或比例。:.. rac{345}{7}$三、计算,要写出主要计算过程,能用简便方法的要用简便方法计算。1.$ rac{1111}{5}+2+32+ rac{1}{3}- rac{1}{4}= rac{2222}{10}+2+ rac{96}{3}- rac{5}{20}= rac{2222}{10}+2+32- rac{1}{4}= rac{2222}{10}+ rac{81}{4}= rac{8888+405}{40}= rac{9293}{40}$2.$ rac{1}{2}+ rac{1}{2}= rac{1}{3}+ rac{2}{3}=1$3.$4 rac{5}{8}- rac{1}{4}= rac{37}{8}- rac{2}{8}= rac{35}{8}$4.$68-+32-=60$ rac{1}{2}ight)= rac{5}{12}- rac{1}{12}+ rac{6}{12}= rac{5}{12}+ rac{5}{12}= rac{5}{6}$:..计算题练二一、直接写出得数。1.$ rac{1}{2}+ rac{1}{2}=1$2.$ rac{1}{3}+ rac{2}{3}=1$3.$1- rac{555}{6}=- rac{549}{6}$4.$6-6=0$5.$ rac{1}{5}+ rac{}{5}=.2$6.$5-5=0$7.$8+8=16$8.$1- rac{2}{1}=-1$二、解方程或比例。 rac{231}{4}$:..三、计算下列各题,要写出主要计算过程,能用简便方法的要用简便方法计算。1.$ rac{1}{5}+ rac{1}{3}+ rac{4}{5}= rac{3}{15}+ rac{5}{15}+ rac{12}{15}= rac{20}{15}=1 rac{1}{3}$2.$1- rac{5}{11}- rac{6}{11}=- rac{10}{11}$3.$ rac{1}{5}- rac{11}{62}+ rac{1}{5}+ rac{5}{7}= rac{12}{62}+ rac{25}{35}= rac{6}{31}+ rac{5}{7}= rac{239}{217}$4.$11+ rac{1}{5}+ rac{1}{11}+ rac{5}{11}= rac{227}{11}$ rac{xxxxxxxx45}{5}ight)= rac{13}{15}- rac{13}{15}+ rac{xxxxxxxx9}{15}= rac{xxxxxxxx}{225}$计算题练三一、直接写出得数。1.$ rac{2}{9}+ rac{1}{2}= rac{13}{18}$:..2.$ rac{6}{7}- rac{2}{3}= rac{4}{21}$3.$ rac{3}{10}+ rac{1}{4}= rac{7}{20}$4.$ rac{3}{7}+ rac{1}{9}= rac{32}{63}$5.$ rac{1}{3}- rac{1}{5}= rac{2}{15}$6.$ rac{1}{6}+ rac{1}{4}= rac{5}{12}$7.$ rac{5}{7}- rac{1}{5}= rac{24}{35}$8.$17 rac{1}{5}- rac{}{20}-20= rac{171}{20}$9.$7-5 rac{15}{}=- rac{304}{}$10.$14+14+14=42$11.$4+ rac{3}{4}= rac{19}{4}$二、解方程或比例。 rac{231}{4}$三、计算下列各题,要写出主要计算过程,能用简便方法的要用简便方法计算。:..1.$ rac{1}{5}+ rac{1}{3}+ rac{4}{5}= rac{3}{15}+ rac{5}{15}+ rac{12}{15}= rac{20}{15}=1 rac{1}{3}$2.$1- rac{5}{11}- rac{6}{11}=- rac{10}{11}$3.$ rac{1}{5}- rac{11}{62}+ rac{1}{5}+ rac{5}{7}= rac{12}{62}+ rac{25}{35}= rac{6}{31}+ rac{5}{7}= rac{239}{217}$4.$11+ rac{1}{5}+ rac{1}{11}+ rac{5}{11}= rac{227}{11}$ rac{xxxxxxxx45}{5}ight)= rac{13}{15}- rac{13}{15}+ rac{xxxxxxxx9}{15}= rac{xxxxxxxx}{225}$计算题练四一、直接写出得数。×=,7÷40=,2-/3=-4138/3,5+5=10,2+3=5,÷=,13-14=112,÷8=,÷=3,10-=,12+12=24,×80=1000,8+8=16,13+116=256,5-6=-1.:..二、解方程。①χ=27/28,②χ=5/6,③χ=19/、计算下列各题,要写出主要计算过程,能用简便方法的要用简便方法计算。(18分)①17/20-(7/20+5/12)=17/20-11/30=51/60-22/60=29/60;②8/9-(2/9+1/3)=8/9-5/9=3/9=1/3;③2/9+4/5+71/9+5=2/9+71/9+4/5+5=73/9+4/5+5=73/9+44/45=365/45+44/45=409/45;④7-xxxxxxxx/7-7=7-xxxxxxx=≈7;⑤5+15+10=30;⑥6-(4-5)=6-(-1)=7.:..计算题练五一、直接写出得数。7/8+1/2=11/8,1/2+1/3=5/6,1/8-1/9=1/72,3/4-1/2=1/4,1+6/13=19/13,3/5+2/5=1,xxxxxxxx/3-6=xxxxxxx,8+3=11,10+3=13,8-4=4,23/5+10=33/5,1/4+1/4=1/2,2/7+1/14=5/14,62=53=9,×8=1,×13=,28÷56=1/、解方程。3/7χ+1/8=1/2,χ=23/28;4χ-=36,χ=20;X+33/7=4,X=5/、递等式计算,怎样简便就怎样算。(18分)-+-=,×-×=×1=;7-xxxxxxxx3/7-7=-xxxxxxxx2/7,17-(17+10)=-10,1/5+(6-18)=-1;计算题练六:..一、直接写出得数。5/6+4/9=23/18,10-5=5,5-4=1,1-5=-4,1÷=1000,×4=10,1/3+1/4=7/12,1/5-1/6=1/30,11/15+4/11+4/15=13/。解方程①X=9/35②X=1/2③X=2/11三。脱式计算xxxxxxx/11+13+116+(6-8)/12-(7/12+4/5)+1/4+1/2+xxxxxxx/147+9+7+9/2-15-15=xxxxxxx/11+13+116-1/6-47/60+1/4+1/2+xxxxxxx/147+9+7+9/2-30=xxxxxxx/11+116+xxxxxxx/147+111/2-47/60-1/6-30=/11+116+/49-47/60-1/6-30=/539+116-47/60-1/6-30=(×60+116×-47×539-1×3234-6×60)/=xxxxxxx/=142/167:..一。直接写出得数1/2+2/3=7/÷=-1/4=1/÷8=÷=310-=+7/12=×80=÷=+1/3=5/6二。解方程或比例X=21/8②X=7:..4/5+11/15+3/10-(+)++15/6++6/15-3/7-4/7+9/11+5/6+/11-68-(10-8)=4/5+11/15+3/10-++15/6++2/5-7/7+3/11+5/6+-68-2=4/5+11/15+3/10-++++2/5-1+3/11+5/6+-70=+0.+-++++-1+++-70=、+3/4=11/12通过移项和通分,得到x=1/32./16-x=8通过移项和通分,得到x=/16-8=/16:..4x=-1,再除以4,得到x=-1/4三、-11/4-3-4=-15/×(-)=×1=-75/12-12=73/+431/5-8/5+5=2164/×(5+xxxxxxxx/15)+4+15=+21+21=57计算题练十三:..20=÷5=,-2=,÷3=,+=÷=3,+=,×4=+1/3+45/5=60/15+5/15+225/15=290/15=58/=32/100,7-=,4÷6=2/-1/2=4/5,通过移项和通分,得到x=9/-5/6=1/6,5/6-5/11=20/66-30/66=-10/66=-5/-9/12=1/6,4/5+2/10=4/5+1/5=1,6/5-1=1/5,5/7+1/7=6/7,5/12+1/12=1/2,=8/25,5/8-1/8=1/2,4÷6=2/3:..+/9=1,通过移项和通分,得到x=-/-(14+7)=2,通过移项,得到x=23三、-1/4-1/3-3/4=21/-75/12-128+5-8+5=-63/+11/15+3/4+xxxxxxxx1711/15=xxxxxxxx1873/+15+6/15+623-21+23-21=6204/15