1.3/5=():()=():15=21÷()=()%
2.()的2/5是2.4;
3.化简比
3.2;16/3
45分;1.5时
4.求比值
360g;0.45kg
8/9;5/6 _ 土堆网 - 广州大学城最热闹网上社区!
1.3/5=():()=():15=21÷()=()%
2.()的2/5是2.4;
3.化简比
3.2;16/3
45分;1.5时
4.求比值
360g;0.45kg
8/9;5/6
2.8:42 =1/15
4分之1:3分之1=1/4÷1/3=3/4
6.5:1.3 =5:1
5分之2:7分之4=7:10 6分之1+5分之4*6分之5=1/6+2/3=5/63-2分之3*21分之10-7分之2=3-20/63-2/7=25/63(2分之1-3分这1+6分之1)*24=1/2×24-1/3×24+1/6×24=12-8+4=810分之3/(5分之1+4分之1)-3分之2=3/10÷(1/5+1/4)-2/3=3/10×20/9-2/3=2/3-2/3=015/ [(0.75-2分之1)*5分之2 ]=15÷[(3/4-1/2)×2/5]=15÷[3/10-1/5]=15×10=150(5分之4*8分之5+2分之1)/4分之3=(4/5×5/8+1/2)÷3/4=(1/2+1/2)÷3/4=1÷3/4=4/3
太急啦,有些有***,有些没打不下啦,不可以超过10000字。差21道口算小数口算(还有,补在最后面)1.10-5.4= 2.4÷20= 3.5×200= 4.1.5-0.06= 5.0.75÷15= 6.0.4×0.8= 7.4×0.25= 8.0.36+1.54= 9.1.01×99= 10.420÷35= 11.25×12= 12.135÷0.5= 13.3/4 + 1/4 = 14.2 + 4/9 = 15.3 - 2/3 = 16.3/4 - 1/2= 17.1/6 + 1/2 -1/6 = 18.7.5-(2.5+3.8)= 19.7/8 + 3/8 = 20.3/10 +1/5 = 21.4/5 - 7/10 = 22.2 - 1/6 -1/3 = 23.0.51÷17= 24.32.8+19= 25.5.2÷1.3= 26.1.6×0.4= 递等式计算1. 3/7 × 49/9 - 4/3 2. 8/9 × 15/36 + 1/27 3. 12× 5/6 – 2/9 ×3 4. 8× 5/4 + 1/4 5. 6÷ 3/8 – 3/8 ÷6 6. 4/7 × 5/9 + 3/7 × 5/9 7. 5/2 -( 3/2 + 4/5 ) 8. 7/8 + ( 1/8 + 1/9 ) 9. 9 × 5/6 + 5/6 10. 3/4 × 8/9 - 1/3 11. 7 × 5/49 + 3/14 12. 6 ×( 1/2 + 2/3 ) 13. 8 × 4/5 + 8 × 11/5 14. 31 × 5/6 – 5/6 15. 9/7 - ( 2/7 – 10/21 ) 16. 5/9 × 18 – 14 × 2/7 17. 4/5 × 25/16 + 2/3 × 3/4 18. 14 × 8/7 – 5/6 × 12/15 19. 17/32 – 3/4 × 9/24 20. 3 × 2/9 + 1/3 21. 5/7 × 3/25 + 3/7 22. 3/14 ×× 2/3 + 1/6 23. 1/5 × 2/3 + 5/6 24. 9/22 + 1/11 ÷ 1/2 25. 5/3 × 11/5 + 4/3 26. 45 × 2/3 + 1/3 × 15 27. 7/19 + 12/19 × 5/6 28. 1/4 + 3/4 ÷ 2/3 29. 8/7 × 21/16 + 1/2 30. 101 × 1/5 – 1/5 × 21 31.50+160÷40 (58+370)÷(64-45) 32.120-144÷18+35 33.347+45×2-4160÷52 34(58+37)÷(64-9×5) 35.95÷(64-45) 36.178-145÷5×6+42 420+580-64×21÷28 37.812-700÷(9+31×11) (136+64)×(65-345÷23) 38.85+14×(14+208÷26) 39.(284+16)×(512-8208÷18) 40.120-36×4÷18+35 41.(58+37)÷(64-9×5) 42.(6.8-6.8×0.55)÷8.5 43.0.12× 4.8÷0.12×4.8 44.(3.2×1.5+2.5)÷1.6 (2)3.2×(1.5+2.5)÷1.6 45.6-1.6÷4= 5.38+7.85-5.37= 46.7.2÷0.8-1.2×5= 6-1.19×3-0.43= 47.6.5×(4.8-1.2×4)= 0.68×1.9+0.32×1.9 48.10.15-10.75×0.4-5.7 49.5.8×(3.87-0.13)+4.2×3.74 50.32.52-(6+9.728÷3.2)×2.551.2÷2.5+2.5÷2 52.194-64.8÷1.8×0.9 53.36.72÷4.25×9.9 54.×6 55.24÷2.4-2.5×0.8 56.()÷7 57.671×15-974 58.469×12+1492 59.405×() 60.3.416÷(0.016×35) 61.0.8×[(10-6.76)÷1.2] 62.19.4×6.1×2.3 5.67×0.2-0.62 63.18.1×0.92+3.93 0..875 64.0.4×0.7×0.25 0.75×102 100-56.23 65.0.78+5.436+1 4.07×0.86+9.12.5 简便运算1. 1-2+3-4+5-6+7-8+9-10+11-12+................+05- =1+(3-2)+(5-4)+.........+() =1+(2007-1)/2 =10052、480+325+75 =480+(325+75) =480+400 =880 3、295-128-72 =295+(128+72) =295+200 =495 4、43×25×4 =43×(25×4) =43×100 =4300 5、102×43 =(100+2)×43 =100×43+2×43 =4300+86 =4386 6、9×37+9×63 =9×(63+37) =9×100 =900 7.66×38-987÷21 66×38-987÷21 = =2508-47 =61 =24618.1.25*17.6+36.1/0.8+2.36*12.5 1.25*17.6+36.1/0.8+2.36*12.5 =(5/4)*17.6+36.1*(5/4)+23.6*(50/4) =176/8+361/8+236/8 =773/8=96.625 9.7.5*2.3+1.9*2.5 7.5*2.3+1.9*2.5 =7.5*(1.9+0.4)+1.9*2.5 =(7.5+2.5)*1.9+7.5*0.4 =19+3 =22 10.05 05 =()*(2003+2) =03 11.276*543-267/276+543*275 276*543-267/276+543*275 =543*(276+275)-267/276 =543*551-267/276 12.00-97-+……+2+1 =()+()+()+()+……+(6-4)+(5-3)+2+1 =2+2+2+2+……+2+2(从3-个数,所以有+1 =+1 =2003 13.1/3+1/15++1/35+1/63+九十1/9=1/(1×3)+1/(3×5)+1/(5×7)+1/(7×9)+1/(9×11) =1/2×(1-1/3)+1/2×(1/3-1/5)+1/2×(1/5-1/7)+1/2×(1/7-1/9)+1/2×(1/9-1/11) =1/2×(1 - 1/3 + 1/3 - 1/5 + 1/5 - 1/7 + 1/7 - 1/9 + 1/9 - 1/11) =1/2×(1-1/11) =1/2×10/11 =5/11 14.0.49÷1.4 1.25×2.5×32 3.6-0.6×2 15.3.65×10.1 3.6-3.6×0.8 15.2÷0.25÷4 16.5.6÷3.5 9.6÷0.8÷0.4 4.2×99+4.2 17.0.89×100.1 146.5-(23+46.5) 17.8÷(1.78×4) 18.5.83×2+4.27 (45.9-32.7)÷8÷0.125 9.7×99+9.7 19.4.36×12.5×8 15.6×13.1-15.6-15.6×2.1 0.65×101 20.27.5×3.7-7.5×3.7 8.54÷2.5÷0.4 3.83×4.56+3.83×5.44 21.9.9×0.625×101-62.5 22.9.9×8.6+0.86 23.0. 46×7.5+0. 46×2. 524.4.6×8.04+6.4×8.04-8.04 25.5.4×0.15÷0.2+4.6×0.15
=27*0.15+4.6*0.15
=(27+4.6)*0.15
=31.6*0.15
=4.7426.55×10.43+104.3×4.4+104.3×0.1 =55×10.43+10.43×44+10.43×1 =(55+44+1)*10.43 =100*10.43 =1043解方程1.5/17-x=1/5 2.5/9+x=23 3.6x-x=0.5 4.x-4/9=2/35.4x+20=3.9 6.4x+12=50 7.17+8.3 4x=50-128.4x=38 9.2.3x-1.02=0.36 10.24 x=0.611.X-5.7=2.15 12.15 5X-2X=18 13.3X+0.7=5 14.3.5×2= 4.2+x 15.26×1.5= 2x+10 16.0.5×16―16×0.2=4x 17.13 9.25-X=0.403 18.16.9÷X=0. 3 19.X÷0.5=2.6 20.x+13=33 21.3 - 5x=80 22.1.8 +6x=54 23.6.7x -60.3=6.7 24.9 +4x =40 25.0.2x-0.4+0.5=3.7 26.9.4x-0.4x=16.2口算(补充):17×40=680, 100-63=37, 3.2+1.68=4.88, 2.8×0.4= 1.12 14-7.4=6.6, 1.92÷0.04=48, 0.32×500=160, 0.65+4.35= 5 10-5.4=4.6, 4÷20=0.2, 3.5×200=700, 1.5-0.06=1.44 0.75÷15=0.05, 0.4×0.8=0.32, 4×0.25=1, 0.36+1.54=2 1.01×99=99.99, 420÷35=12, 25×12=300, 135÷0.5=270 3/4 + 1/4 =1, 2 + 4/9 =22/9, 3 - 2/3 =7/3, 3/4 - 1/2= 1/4 1/6 + 1/2 -1/6 =1/2, 7.5-(2.5+3.8)=1.2, 7/8 + 3/8 =5/4 3/10 +1/5 =1/2, 4/5 - 7/10 =1/10, 2 - 1/6 -1/3 =1.5 0.51÷17=0.03, 32.8+19=51.8, 5.2÷1.3=4, 1.6×0.4= 0.64 4.9×0.7=3.43, 1÷5=0.2, 6÷12=0.5, 0.87-0.49=0.38 还有:1.(1+1/2)(1+1/3)(1+1/4)......(1+1/100) 2.(1-1/2)(1-1/3)(1-1/4)......(1-1/100) 3.8+2-8+2 4.25*4/25*4 5.7.26-(5.26-1.5) 6.286+198 7.314-202 8.526+301 9.223-99 10.6.25+3.85-2.125+3.875 11.9-2456*21 12.0.5/11.5-4*2.75 13.1/2×3/5 14.3.375+5.75+2.25+6.625 15.÷18 16.3.8×5.25+14.5 17.2.1*4.3+5.7*2.1 18.30×1/3 19.102*45-328 20.2/3×12 21.2.8*3.1+17.6/8 22.3/5×5/6 23.(50-12.5)/2.5 24.2/5×1/3 25. 26.1/2-1/6 27.3.5*2.7-52.2/18 28.1/7×1/5 29.3.375*0.97+0.97*6.625 30.25×4/5 31.6.54+2.4+3.46+0.6 32.5/6-1/2 33.95.6*1.8+95.6*8.2 34.1/2×1/5 35.600-420/12 36.344/3.6-5.4*0.25 37.16/2+30/2+90/6 38.. 39. 40.0.15/0.25+0.75*1.2 41.(1/2+1/3+1/4)*0.24 42.(25+4)*4 43.300-4263/21 44.0.81/0.25+5.96 45.403÷13×27 46.1.5×4.2-0.75÷0.25 47.3.27×4 +3.27×5.7 48.(1.2+ 1.8)×4.5÷32 49.0.25×80-0.45÷0.9 50.÷32 51.0.25*2.69*4 52. 53.2/9*15/8-1/12*9/5 54.2.4+2.4*(5.375-3.375) 55.645-45*12 56.0.15+1.2/0.24-0.45 57.3.75-(2.35+0.25/1.25) 58.76*1/4+23*25/100+0.25 59.10-2.87-7.13 60.0.96+9.6*9.9 61.7.5-5.7*1/3 62.12.37-3.25-6.75 63.16*6.8+2.2*16+16 64.401*19+284 65.58.7-16.65/3.7 66.0.4*4.7*2.5+(2.3+5.3) 67.9.31-1.125-7.875 68.640+128*45 69.8.2*1.6-0.336/4.2 70.400*(0.62+0.08) 1.5×3.6=( ) 3.7×5.3=( ) 2.3×6=( ) 8.1×3.4=( ) 7.6×4.3=( ) 1.6×5.3=( ) 4.3×7-6.3+5.1=( ) 6.2÷3.1×4.5=( ) (8.6-1.5+9.4)×9.3=( )(5.3+2.7)÷(3.6+2.5)=( )4.5*6=? 6-4.05=? 8.4÷0.7=? 3.67+6.13=? 0.5*1.2=? 0.55÷1.1=? 5.42+7.5*1.6=? 0.25*1.7*0.4=? 7.86-=? 0.125*32*2.5=? 4.5*6=? 6-4.05=? 8.4÷0.7=? 3.67+6.13=? 0.5*1.2=? 0.55÷1.1=? 5.42+7.5*1.6=? 0.25*1.7*0.4=? 7.86-=? 0.125*32*2.5=? 4.5*6=? 6-4.05=? 8.4÷0.7=? 3.67+6.13=? 0.5*1.2=? 0.55÷1.1=? 5.42+7.5*1.6=? 0.25*1.7*0.4=? 7.86-=? 0.125*32*2.5=?
7.09/0.52=709/52= 13.3853.428/7.5=34.28/75= 0.666726/4.2=260/42= 6.19119.4/0.012=6.7
1、2.6×99+2.6 =26*(99+1)=26*100=26002、21÷(1/3+2/5)÷9/11 =21÷(11/15)÷9/11=21*15/11*11/9=21*15*1/9=7*5=353、18.5-(5.6+4.8)/1.3=18.5-10.4/1.318.5-8=10.5
======57=6-=70\6=0=\6uhljuopo[plgplh\yuoptyuo[to66\upy[p
4.5*3.7+4又1/2*1.3 =4.5*3.7+4.5*1.3 =4.5*(3.7+1.3) =4.5*5 =22.5 3*(2/15+1/12-0.25) = 3*2/15+3*1/12-3*0.25 =2/5+1/4-0.75 =0.4+0.25-0.75 =0.4-0.5 =-0.1
7.09/0.52=709/52= 13.385 3.428/7.5=34.28/75= 0..2=260/42= 6.191 19.4/0.012=6.7
2.8:42 =1/15 4分之1:3分之1=1/4÷1/3=3/4 6.5:1.3 =5:1 5分之2:7分之4=7:10 6分之1+5分之4*6分之5 =1/6+2/3 =5/6 3-2分之3*21分之10-7分之2 =3-20/63-2/7 =25/63 (2分之1-3分这1+6分之1)*24 =1/2×24-1/3×24+1/6×24 =12-8+4 =8 10分之3/(5...
1、2.6×99+2.6 =26*(99+1)=26*100=÷(1/3+2/5)÷9/11 =21÷(11/15)÷9/11 =21*15/11*11/9 =21*15*1/9 =7*5 =35 3、18.5-(5.6+4.8)/1.3 =18.5-10.4/1.3 18.5-8=10.5
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本文网址:http://www.tudui.net/view-19526-1.html口算.4分之3+5分之1=2分之1+8分之1=2分之3+20分之1=3分之2-6分之1=1-5分之3=7分之1-8分之1
口算.4分之3+5分之1=2分之1+8分之1=2分之3+20分之1=3分之2-6分之1=1-5分之3=7分之1-8分之1=9分之4-3分之1=
20分之19 8分之五 20分之31 2分之1 5分之二 56分之1 9分之1 =-=
与《口算.4分之3+5分之1=2分之1+8分之1=2分之3+20分之1=3分之2-6分之1=1-5分之3=7分之1-8分之1》相关的作业问题
530-70= 0.37×20= 6.43+1.95= 48÷0.6= 8.5-0.24-1.76= 350÷50= 8.5÷5= 320÷40= 45-32= 1.8×6-1.8= 11) 12.4+0.37= 1-0.62= 720÷×8×125×4= 0.36÷3= 1-0.76= 8500×
第一列数:8 4 16 8 32 16 【64 】 【32】规律是:隔个观察,后一个数是前一个数的2倍. 8×2=16 16×2=32 32×2=64 4×2=8 8×2=16 16×2=32第二列数: 100 10 90 20 80 30 【70】 【40】 规律是隔个观察.100、90、80、(70) 10、20、
7×8+8=644×9+9=458×8+4=689×2+5=232×9+9=×43=4×12=484×500==808×70=550×6=3
1.设全场为x,2/5*x+200=1/2*x+201/10*x=180x=-0.6+6.44-0.4=5.56+6.64-0.4-0.6=12.2-0.1=12.13.36除以3/5=36*5/3=60 有一个口诀吧:量比率 是求总量,量就是36,率就是3//34.x-5/8
4.7+2.3= 4.5×2= 6.9-2.5= 7.2×0.8= 6×3.4= 0.62-0.32= 1.4×0.5= 0.75×100=0.02×0.5= 3.6÷0.3= 6.3÷7= 5.6÷100=0.75÷0.25= 0.125×8= 4.8÷0.3= 0.96÷2=0.56÷28= 0.36÷0.4= 0
百度一搜,很多的 25 -15 -80 = 10 -80 = -70 26 -6 -64 = 20 -64 = -44 27 + 3 -48 = 30 -48 = -18 28 + 12 -32 = 40
1、把下面的加法算式改写成乘法算式.(1)20+20+20=60乘法算式:________(2)30+30+30+30=120乘法算式:________(3)++=6000乘法算式:________(4)500+500+500+500=2000乘法算式:______
四年级两位数乘一位数(1) 94 × 8 = (2) 57 × 6 = (3) 9 × 67 = (4) 26 × 9 = (5) 41 × 9 = (6) 57 × 3 = (7) 7 × 79 = (8) 62 × 5 = (9) 21 × 1 = (10) 3 × 57 = (11) 5 × 84 = (12)
0.7×8=5.6 0.6×0.9=0.54 0.5×0.8=0.4 1.2×0.4=0.481.5×0.6=0.9 0.25×4=1 0.4×0.9=0.36 0.1×5.3=0.530.12×100=12 7.9×100=790 0.42÷100=0.÷654.2÷0.7=6
小明和小华做口算题的速度比是:2/3:1/2=4:3小明做了20道题时,小华做了:20×3/4=15道他们个做了多少道口算题:15+45=60道
172X56-79X36-93X3=172X(36+20)-79X36-93X3=(172-79)X36+172X20-93X3=93X36+172X20-93X3=93X33+172X20=09 再问: 谢谢,还有几道题呢 再答: 第二题 54+99X99+45 =54+45+99X99 =9
x-2x/5=243x/5=24x/5=8x=40 3x/5+7/10=3/43x/5+14/20=15/203x/5=15/20-14/203x/5=1/203x=1/4x=1/12 学校有故事书180本,占图书总数的5分之3,学校共有多少本书?180÷3/5=180×5/3=300本即学校共有300本书 ~请首先关
6分之1乘49乘7分之1=7/6 2.4乘8分之3=6.4,简算4分之3乘40%+0.75乘5分之3=0.3+1.25=1.5523乘(23分之5-32分之5)乘32=23乘23分之5乘32-23乘32分之5乘32=160-115=45【2分之1+(4分之3+5分之4)】除以10分之7=(2分之1+20分之31)除以1
19/283/85/31/85/129/142/88/1414/5
小红 她用了六分十六秒 而小丽用了六分十八秒
小华做1/2的时候,小明做了:(1-1/3)×1/2+1/3=2/3小明与小华的速度比是:2/3:1/2=4:3那么小明做1/3的时候,小华做了:1/3×3/4=1/4每人题数:45÷(1-1/4)=60题两人总题数:60×2=120题
7分之4+7分之2÷2=5/7 1÷25%= 4 3又5分之3÷3=6/5 4-1又5分之1÷1又5分之1 = 3 1-12分之5-12分之5= 1 2.4×6分之5= 2 254-97=157 04又3分之1÷1.3=2.5 4分之1+3分之1-4分之1+4分之1=7/12 19÷19%= 1
一会上手写图 稍等 再答: 再答: 亲,我的回答你满意吗?麻烦选择满意好吗,你可以继续问我喔。手写不易,小女子谢谢了。
呃……也不说明白点……提供两种方法:(1):方程解法:设共做x道题.1/3x+20=2/5x20=(2/5-1/3)xx=20:(2/5-1/3)x=300答:笑笑共做300道题.(2):算数比例解法:总题数为单位“1”,则已做题:总题数=2/(2+3)∴总题数:20:(2:5-1:3)=300答:笑笑共做300道题.
3÷1/3=9分钟10-9=1分钟答小明的时间够,还多1分钟