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五年级下册数学简便运算练习题讲解 五年级下册数学简便运算练习题

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今天来聊聊关于五年级下册数学简便运算练习题讲解,五年级下册数学简便运算练习题的文章,现在就为大家来简单介绍下五年级下册数学简便运算练习题讲解,五年级下册数学简便运算练习题,希望对各位小伙伴们有所帮助。

1、25x8=25x4x2=100x2=200 102x99=102x(100-1)=102x100-102x1=10200-102=10098 382x101-382=382x101-382x1=382x(101-1)=382x100=38200 35x8-4x35=35x(8-4)=35x4=140 136x101-136=136x101-136x1=136x(101-1)=136x100=13600 4600/25/4=4600/(25x4)=4600/100=46 25x15x4=25x4x15=100x15=1500 99x126=126x(100-1)=126x100-126x1=12600-126=12474 120÷(3分之1-4分之1)=120÷(12分之4-12分之3)=120÷12分之1=120×12=1440 10.1×89-8.9=101x8.9-8.9x1=8.9x(101-1)=8.9x100=890 9.07-22.78÷3.4=9.07-6.7=9.07-(7-0.3)=9.07-7+0.3=2.07+0.3=2.37 5+7×(8+12)÷(4-2)=5+7×20÷2=5+70=75 16x4+16x6x16=16x4+96x16=16x(4+96)=16x100=1600 7/25×4/9+7/25×5/9     =7/25×(4/9+5/9)=7/25×1=7/25 60×(1/12+1/15+1/4)     =60×1/12+60×1/15+60×1/4=5+4+15=24 (5/12-3/8)×72 =5/12×72-3/8×72=30-27=3 6/7-5/24÷7/12     =6/7-5/24×12/7=12/14-5/14=7/14=1/2 [3/4×(7/16-1/4)]÷9/13=3/4×(7/16-4/16)×13/9=1/4×3/16×13/3=13/64 2/3-7/8+1/3=(2/3+1/3)-7/8=1-7/8=1/8 5/6-(3/7-1/6)=(5/6+1/6)-3/7=1-3/7=4/7 1-1/3-2/3=1-(1/3+2/3)=1-1=0 1+3/5-1/10=1+6/10-1/10=1+1/2=1又1/2 3/8-12/13+5/8=3/8+5/8-12/13=1-12/13=1/13 1-(1/2-3/4)=1+3/4-2/4=1+1/4=5/4 1-1/2-1/4=1/2-1/4=2/4-1/4=1/4 2/7-8/9+5/7=(2/7+5/7)-8/9=1-8/9=1/9 2-1/4-3/4=2-(1/4+3/4)=2-1=1 1/2-(3/8-1/2)=1/2+1/2-3/4=1-3/8=5/8 2.64×1.7-2.64×0.7=2.64×(1.7-0.7)=2.64×1=2.64 31.5×1.07-3.15×0.7=3.15×10.7-3.15×0.7=3.15×(10.7-0.7)=3.15×10=31.5 2.7×5.7-2.7+5.3×2.7=2.7×(5.7-1+5.3)=2.7×10=27 0.625÷0.125×0.8=(0.625×0.8)×8÷(0.125×8)=0.5×8÷1=4 18.6×6.1+3.9×18.6=18.6×(6.1+3.9)=18.6×10=186 0.92x15+0.08x15=(0.92+0.08)×15=1×15=15 0.72×1.25×2.5=0.9×(0.8×1.25)×2.5=0.9×1×2.5=2.25 400.6x7-2003x0.4=200.3x14-200.3x4=200.3×(14-4)=200.3×10=2003 300÷125÷8 =300÷(125×8) =300÷1000 =0.3  396-96-172-28 =(396-96)-(172+28) =300-200 =100  125x24 =125x8x3 =1000x3 =3000 26x15 =(20+6)x15 =20x15+6x15 =300+90 =390  25x99x4 =25x4x99 =100x99 =9900  250x32 =250x4x8 =1000x8 =8000  (98+98+98+98)x25 =4x98x25 =4x25x98 =100x98 =9800 3/4÷5/8×3/10        =3/4×8/5×3/10=9/5×1/5=9/25 1.25×(8+10)=1.25×8+1.25×10=10+12.5=22.5 1.24+0.78+8.76=(1.24+8.76)+0.78=10+0.78=10.78 1/2-(4/5-1/2)=1/2+1/2-4/5=1-4/5=1/5 4800÷25÷4=4800÷(25x4)=4800÷100=4800÷100=48 2/5-(3/8-3/5)=2/5+3/5-3/8=1-3/8=5/8 3/4-(3/7-1/4)=3/4+1/4-3/7=1-3/7=4/7 3.2x0.125x2.5=0.125x8x(0.4x2.5)=1x1=1 0.4×125×25×0.8=(0.4×25)×(125×0.8)=10×100=1000 1.25×(8+10)=1.25×8+1.25×10=10+12.5=22.5 9123-(123+8.8)=9123-123-8.8=9000-8.8=8991.2 1.24×8.3+8.3×1.76=8.3×(1.24+1.76)=8.3×3=24.9 9999×1001=9999×(1000+1)=9999×1000+9999×1=10008999 14.8×6.3-6.3×6.5+8.3×3.7=(14.8-6.5)×6.3+8.3×3.7=8.3×6.3+8.3×3.7=8.3×(6.3+3.7)=8.3×10=83 1.24+0.78+8.76=(1.24+8.76)+0.78=10+0.78=10.78 933-157-43=933-(157+43)=933-200=733 4821-998=4821-1000+2=3823 32×125×25=4×8×125×25=(4×25)×(8×125)=100×1000=100000 1.8+18÷1.5-0.5×0.3=1.8+12-0.15=13.8-0.15=13.65 6.5×8+3.5×8-47=52+28-47=80-47=33 3.7x2.56-2.3=9.472-2.3=7.172 1.24+0.78+8.76=(1.24+8.76)+0.78=10+0.78=10.78 1/2-(4/5-1/2)=1/2+1/2-4/5=1-4/5=1/5 4800÷25÷4=4800÷(25x4)=4800÷100=4800÷100=48 2/5-(3/8-3/5)=2/5+3/5-3/8=1-3/8=5/8 3/4-(3/7-1/4)=3/4+1/4-3/7=1-3/7=4/7 3.2x0.125x2.5=0.125x8x(0.4x2.5)=1x1=1 0.4×125×25×0.8=(0.4×25)×(125×0.8)=10×100=1000 1.25×(8+10)=1.25×8+1.25×10=10+12.5=22.5 9123-(123+8.8)=9123-123-8.8=9000-8.8=8991.2 1.24×8.3+8.3×1.76=8.3×(1.24+1.76)=8.3×3=24.9 9999×1001=9999×(1000+1)=9999×1000+9999×1=10008999 14.8×6.3-6.3×6.5+8.3×3.7=(14.8-6.5)×6.3+8.3×3.7=8.3×6.3+8.3×3.7=8.3×(6.3+3.7)=8.3×10=83 1.24+0.78+8.76=(1.24+8.76)+0.78=10+0.78=10.78 933-157-43=933-(157+43)=933-200=733 4821-998=4821-1000+2=3823 32×125×25=4×8×125×25=(4×25)×(8×125)=100×1000=100000 9/17x8/13+8/13/(17/8)=9/17x8/13+8/13x8/17=8/13x(9/17+8/17)=8/13x1=8/13 10.1×89-8.9=10.1x89-89x0.1=89x(10.1-0.1)=89x10=890 方程: 4x+8=4解:4x=4-84x=-4x=-4÷4x=-1 12x+8x-12=28解:20x=28+1220x=40x=40÷20x=2 4x+2.1=8.5解:4x=8.5-2.14x=6.4x=6.4÷4x=1.6 65y-30=100解:65y=100+3065y=130y=130÷65y=2 15x-7.5x=15解:7.5x=15x=15÷7.5x=2 25%x=5解:1/4x=5x=5*4x=20 20-15%x=17解:0.15x=20-170.15x=3x=3÷0.15x=20 25%x=5解:0.25x=5x=5÷0.25x=20 80%X=6/15X+96解:4/5X=2/5X+964/5X-2/5X=962/5X=96X=96*5/2X=48*5X=240 15%X+10-X=10*32% 解:0.15X-X=3.2-10-0.85X=-6.8X=-6.8÷(-0.85)X=8 15%X+10-X=10*32% 解:0.15X+10-X=3.2X-0.15X=10-3.20.85X=6.8X=6.8÷0.85X=8 8÷x=0.4解:8÷x*x=0.4*x0.4x=80.4x÷0.4=8÷0.4x=20 5x+8x=4.7解:13x=4.7x=4.7/13x=47/130 2*20x=10(60-x) 解:40x=600-10x40x+10x=60050x=600x=600÷50x=12 x÷75+x÷60=36解:1/75x+1/60x=364/300x+5/300x=369/300x=36x=36*300/9x=12*100x=1200 x-0.7x=16解:(1-0.7)x=160.3x=16x=16÷0.3x=16/0.3x=160/3 8(x-4)+5=45解:8(x-4)=45-58(x-4)=40x-4=40÷8x-4=5x=5+4x=9 (x+10)*2.4+4=x+25+10解:2.4x+24+4=x+352.4x+28=x+352.4x-x=35-281.4x=7x=7÷1.4x=5 4x+8=4解:4x+8-8=4-8——等式性质4x=-44x÷4=-4÷4x=-1 7.8x-14=40解:7.8x=40+147.8x=54x=54/7.8x=540/78x=90/13 5x+30=6x-10解:6x-5x=30+10x=40 4x+8=4——方程两边除以4解:x+2=1x=1-2x=-1 x:6.5=6:4解:4x=6.5*64x=39x=39/4x=9.75 8.6x+3*6=52.4解:8.6x+18=52.48.6x=52.4-188.6x=34.4x=34.4÷8.6x=4 x/5.2-1.6=1.8解:x/5.2=1.8+1.6 x/5.2=3.4x=3.4*5.2x=17.68 225x=239.2x解:239.2x-225x=014.2x=0x=0÷14.2x=0 80x+(80-20)(x+10)=4800解:80x+60(x+10)=480080x+60x+600=4800140x=4800-600140x=4200x=4200÷140x=30 1.5x-0.6*15=18解:1.5x-9=181.5x=18+91.5x=27x=27÷1.5x=18 6x+4(2x-1)+3(45-3x)=171解:6x+8x-4+135-9x=1716x+8x-9x+131=1715x=171-1315x=40x=40÷5x=8  9x*2+18*6x+17*2x=12.8解:(18+108+34)x=12.8160x=12.8x=12.8÷160x=0.08 2x*(x-1)-x*(2x+3)=15解:2x²-2x-2x²-3x=15-5x=15x=15÷(-5)x=-3 2分之1x+5分之1=3分之1x解:2分之1x-3分之1x=-5分之16分之3x-6分之2x=-5分之16分之1x=-5分之1x=-5分之1*6x=-5分之6x=-1又5分之1 8(3x+3)=72解:3x+3=72÷83x+3=93x=9-33x=6x=6÷3x=2 8(3x+3)=72解:24*(x+1)=72x+1=72÷24x+1=3x=3-1x=2 4(y+2)=24解:y+2=24÷4y+2=6y=6-2y=4 3x+12.4=5x-3.6解:5x-3x=12.4+3.62x=16x=16÷2x=8 x-80%x-6=16解:x-0.8x=16+60.2x=22x=22÷0.2x=110 x-0.1x=55.404解:(1-0.1)x=55.4040.9x=55.404x=55.404÷0.9x=61.56 x+12−1/4x=1解:x-1/4x=1-123/4x=-11x=-11*4/3x=-44/3 9分之8÷(2x)=8分之5解:8分之5*2x=9分之84分之5x=9分之8x=9分之8*5分之4x=45分之32 5x+30=6x-10解:6x-5x=30+10x=40 22%x=34解:11/50x=34x=34*50/11x=1700/11 7分之2x:3分之2=6 解:7分之2x=6*3分之27分之2x=4x=4*2分之7x=14 0.5x+3分之1x=9分之5 解:2分之1x+3分之1x=9分之56分之3x+6分之2x=9分之56分之5x=9分之5x=9分之5*5分之6x=3分之2 2x-20%×10=4.22解:2x-2=4.222x=4.22+22x=6.22x=6.22÷2x=3.11 (1-65%)*X=8解:(1-0.65)X=80.35X=8X=8÷0.35X=800/35X=160/7 3分之2X=9分之4解:X=9分之4*2分之3X=3分之2 3分之2X+4分之1=12解:3分之2X=4分之48-4分之13分之2X=4分之47X=4分之47*2分之3X=8分之141 3X-7分之5X=7分之2解:7分之21X-7分之5X=7分之27分之16X=7分之2X=7分之2*16分之7X=8分之1 3X+5=5X-1解:5X-3X=5+12X=6X=6÷2X=3 4x-1.5x=5解:2.5x=5x=5÷2.5x=2 X+3.6=2.5X-3.6解:2.5X-X=3.6+3.61.5X=7.2X=7.2÷1.5X=4.8 x+3.6=2.5x-3.6解:2.5x-x=3.6+3.61.5x=7.2x=7.2÷1.5x=4.8 x÷4=6.34解:x=6.34*4x=25.36 8(x+2.4)=83.2解:x+2.4=83.2÷8x+2.4=10.4x=10.4-2.4x=8 7分之2x=21分之8解:x=21分之8*2分之7x=3分之4x=1又3分之1 9分之8÷2x=8分之5解:9分之8*2分之1x=8分之59分之4x=8分之5x=8分之5*4分之9x=32分之45 3.2+2x=9.8解:1.6+x=4.9x=4.9-1.6x=3.3 1/3x-1/4x=12解:4/12x-3/12x=121/12x=12x=12*12x=144 1/6x+2/3x=20解:1/6x4/6x=205/6x=20x=20*6/5x=4*6x=24 1/2x+1/3x=5/6解:(1/2x+1/3x)×6=5/6×6 3x+2x=55x=5x=5÷5x=1 2x/3+5x/7=23/42解:(2x/3+5x/7)×42=23/42×4228x+30x=2358x=23x=23/58 5/6-x=1/4解:x=5/6-1/4x=10/12-3/12x=7/12 x÷4/5=2/7解:x=2/7×4/5x=8/35 19/8-1/7x=1/8解:1/7x=9/4x=63/4x=15又3/4 14+5x=42解:5x=42-145x=28x=28/5x=5.6 7×5+65x=100解:35+65x=10065x=100-35x=65/65x=1 4x-8*7=28解:4x=28+56x=84/4x=21 8x-x+18=67解:7x+18=677x=67-187x=49x=49÷7x=7 x+15=200解:x=200-15x=185 x/2+x/3=5/6解:(x/2+x/3)×6=5/6×6 3x+2x=55x=5x=5÷5x=1 5*8+2X=60解:40+2X=602X=60-40X=20÷2X=10 5(8+2X)=60解:8+2X=60÷58+2X=122X=12-8X=4÷2X=2 5(8+2X)=60解:8+2X=60÷58/2+2X/2=12/24+X=6X=6-4X=2 X-5%X=12.6        解:0.95X=12.6X=12.6/0.95X=1260/95X=252/19 5分之3÷5分之6-3X=5分之1        解:3X=5分之3*6分之5-5分之13X=2分之1-5分之13X=10分之5-10分之23X=10分之3X=10分之3*3分之1X=10分之1 (X+5分之3)*50%=4        解:X+5分之3=4÷0.5X=8-5分之3X=7又5分之2 5分之4X-4=60       解:5分之4X=60+4X=64*4分之5X=16*5X=80 1÷(X-3分之2X)=5分之4解:5分之4*3分之1X=115分之4X=1X=1*4分之15X=4分之15 3.2+2x=9.8解:2x=9.8-3.22x=6.6x=6.6÷2x=3.3 (8+x)*3=60解:8+x=60÷38+x=20x=20-8x=12 (8+x)*3=60解:24+3x=603x=60-243x=36x=36÷3x=12 口算(竖式): 8.8x5=449.9x24=237.612.5x8=1002.5x4=107.7x10=772.2x5=11101x9=90910.1x9=90.988x5=44099x24=2376125x8=100025x4=10012.5÷5=2.51.5÷3=0.5     2.2÷1.1=21.5÷5=0.31.5÷0.3=51.5÷0.5=32.4÷6=0.42.4÷4=0.63.6÷0.6=62.4÷0.6=45.1÷0.3=172.4÷0.4=62.4÷0.8=36.8÷0.4=172.4÷0.3=82.8÷0.4=72.4÷8=0.38.8÷0.8=112.4÷3=0.818.5÷0.5=373.64÷52=0.070.85x0.4=0.340.32x2.5=0.80.75x2.5=1.8751.25x0.8=12.5x0.4=11.25x4.4=0.52.5x8.8=2219.2÷0.6=3259.8÷0.23=26019.76÷5.2=3.810.8÷45=0.2421÷1.4=158.84÷1.7=5.262.1÷0.03=20701.89÷54=0.0350.51÷0.3=1.77.1÷2.5=2.841.998÷0.54=3.71.28÷16=0.082.1÷0.4=5.252.56÷32=0.0850.18÷38.6=1.34.68÷75=0.062414.7÷0.07=2105.4÷15=0.36124.8÷0.24=52023.4÷585=0.040.544÷0.025=21.76203.5÷11=18.524÷15=1.63.64÷52=0.070.85x0.42=0.3570.32x25=80.75x15=11.251.25x1.8=2.252.5x0.48=1.21.25x4.8=62.5x3.8=9.51.25x2.8=3.52.5x0.46=1.155.5x0.2=1.135×5=17515×5=7523×3=69  12×2.5=30  480÷80=616×5=8027×3=8190÷15=648÷4=12  39÷3=1332×3=9648÷16=312×8=9627×0.3=8.156÷14=414×2=28  560÷80=7  96÷24=418.5÷0.5=37598÷0.23=260019.76÷0.52=3810.8÷45=0.2421÷14=1.58.84÷1.7=5.262.1÷0.3=2075.4÷15=0.3637+26=6376-39=37605+59=66427+32=5948+27=75 73+15 =88280+270=550310-70=240930-660=270530+28=558  840÷21=40750-290=4604500÷50=90120×2=2407000÷70=100200÷40=5180÷30=6  240÷40=635×2=70140×7=98013×6=78280×3=840350×2=70050×11=550250×6=15007200+900=8100410-201=209125×8=100048×20=9606600÷600=11  390+140=53011×80=88024×50=1200  3600÷400=9 4000÷50=80530-70=460420-90=33018.5÷0.5=372769÷390=7.11568÷980=1.64576÷520=8.81440÷240=63072÷960=3.2272÷680=0.43040÷400=7.6576÷120=4.81577÷830=1.95005÷550=9.11701÷270=6.36633÷990=6.7117÷30=3.9825÷750=1.13901÷470=8.31045÷190=5.52457÷910=2.76237÷630=9.92485÷350=7.12832÷590=4.82904÷880=3.34437÷510=8.71357÷230=5.92945÷950=3.1201÷670=0.32925÷390=7.5517÷110=4.71577÷830=1.95005÷550=9.11701÷270=6.33465÷990=3.5117÷30=3.9825 ÷750=1.13901÷470=8.31045÷190=5.52457÷910=2.76237÷630=9.92485÷350=7.1301÷70=4.31185÷790=1.54437÷510=8.71357÷230=5.92945÷950=3.1201÷670=0.32925÷390=7.5517÷110=4.71577÷830=1.95005÷550=9.11701÷270=6.33465÷990=3.52698÷710=3.8740÷74=103772÷460=8.2972÷180=5.42340÷900=2.66076÷620=9.82380÷340=7252÷60=4.21092÷780=1.44300÷500=8.61276 ÷220=5.82820÷940=3132 ÷660=0.22812÷380=7.4460÷100=4.6。

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