5/7+(1/4-9/14) 13/25+1/5—7/15 12/17+(1/4+1/2)5/7+(1/4-9/14)13/25+1/5—7/1512/17+(1/4+1/2)
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5/7+(1/4-9/14) 13/25+1/5—7/15 12/17+(1/4+1/2)5/7+(1/4-9/14)13/25+1/5—7/1512/17+(1/4+1/2)
5/7+(1/4-9/14) 13/25+1/5—7/15 12/17+(1/4+1/2)
5/7+(1/4-9/14)
13/25+1/5—7/15
12/17+(1/4+1/2)
5/7+(1/4-9/14) 13/25+1/5—7/15 12/17+(1/4+1/2)5/7+(1/4-9/14)13/25+1/5—7/1512/17+(1/4+1/2)
9/26
19/75
99/68
5/7+(1/4-9/14) 13/25+1/5—7/15 12/17+(1/4+1/2)5/7+(1/4-9/14)13/25+1/5—7/1512/17+(1/4+1/2)
7分之5*11分之6*7/10 3/4*(9/10-5/6) (1/5+1/9)*45 23/25*1/4+1/4*2/25 101*3/10-3/104/2/3*7/12 8/9/4/27+3/7 8/13/3/7+5/13/3/7 7/9*5/6/14/27 1/2*2/5+9/10/9/20 5/8*1/4/5/8*1/4 (1/2+2/3+3/4)*36
算36点 (1)12,13,14,16 (2)3,16,17,25 (3)5,5,9,9 (4)9,10,11,13 (5)4,6,12,21 (6)7,7,7,13(7)5,5,5,11(8)3,6,9,17(9)3,10,13,22(10)9,10,11,18(11)4,13,13,25(12)4,11,15,21(13)4,4,17,26(14)12,13,14,18
可能对你们来说很简单,来帮帮要简算的哦.急要26/3x(4/1 + 6/5)=9/14 x 23/7 x 14/9=25/1 x 18/7 x 75=3/1 x 5/2 x 3=7/4 x 13/5 x 14=8/5 x 9/7 x 7/3=16 x 3/1 x 9=(8/5 x 7/3)x 5/8=3/2 x 14 x 7/5=24 x(8/3-3/1)=13/5-13/5 x 18/5=67 x 66
(1)1、3,5,1,5,9,1,7,13,1,9_.(2)0.0001,0.005,0.25,12.5__.0,1,1,4,5,9,14,16,30,25_.(4)4,16,36,64,___,144.(5)1,2,4,4,9,6,16,8,___,10.
算简 30÷25÷4 (5/4-1/3)÷1/8+1/7 5/9*13/17+4/9÷17/13
1-1/8÷3/8( )7/11÷14 ( )3/8*4/9( )1÷25 %( )9/7÷3( )10%*5*100%( )21*(2/3-1/7)=( ) 4-11/13÷11/13( )2/3*3/10÷2/3×3/10( )(急)
用简便方法计算!2/7x5/9x(36x28) 7/9÷13/5+2/9x5/13(5/6-7/12x15/14)÷5/4 26/21-1/5-8/9÷10/9
(+32)+(-17)+56又1/2+(+68)+(-1.57)+(-1.43)+(-36.5)简算(+3/7)+(-5/14)+(-2/5)+(+4/7)+(+2/25)+(-9/14)
3/14+5/7+1/21 11/9-7/18-2/3 3/10+4/5-14/15 5/14-(3/10-1/5) 15/13(2/13+5/6)(全部简便计算
1、(-5)*3/13+(-5)*(-2/13)-5*1/13+0.125*(-14/13)*(-8)=4/13求【过程分析】(简便算法)2、(3/7-5/9+8/21)*63-7.15*5+3.15*5求【过程分析】和答案(简便算法)1、(-5)*3/13+(-5)*(-2/13)-5*1/13+0.125*(-14/13)*(-8)=4/132、(3
这几道数量关系题谁会做?(1)12,4,8,6,7,()(2) 0,1,1,2,4,7,13,()(3) 1/2,1/3,7/3,16/3,()(4)2,3,11,65,()(5)1/4,2/11,1/10,4/67,()(6)1/3,3/5,2/8,-1/13,-3/21,()(7)28,1,14,1/28,(),1/10976(8)2,10,30,(),130,222(9)3/7,3/5,9/16,12/25,()
找规律: 2,6,10,14,(),22,26 1,6,5,10,9,14,13(),() 1,4,9,16,25()0,1,2,4,7,12,20()320,1,160,3,80,9,40,27(),()
20个有理数的混合运算(要有过程)1) (-9)-(-13)+(-20)+(-2)(2) 3+13-(-7)/6(3) (-2)-8-14-13(4) (-7)*(-1)/7+8(5) (-11)*4-(-18)/18(6) 4+(-11)-1/(-3)(7) (-17)-6-16/(-18)(8) 5/7+(-1)-(-8)(9) (-1)*(-1)+15+1(10) 3-(-5)*3/(-15)(11) 6*(-14)-(-14)+
简便运算 (5/2+25/4)×125 .13/7×7/1+13/8÷7 .3×(12/5+15/4)-9/4 .、 15/4×(6/5+4/3)+5/1 分母在/前、分子在/后
解方程:2x+25%x=15分之11计算(尽量简便)①16/14分之5/7分之8②13/[(1+3分之1)*4分之3]③(27分之4+36分之5)/9分之5④(5分之3-15分之2)/(12分之1+6分之5)⑤10分之7/13+13分之12*10分之7⑥9分之4/
分式数列1.1/4,2/7,2/5,8/13,1,()9/16,3,32/19,28/172.1,3,4,1,9,()5,11,14,64
把下面的分数约分(1)24分之18(2)9分之27(3)50分之35(4)4分之14(5)180分之25(6)39分之13(7)51分之34(8)5分之25(9)84分之64(10)1000分之250