ldcf.net
当前位置:首页 >> 脱式计算,能简算的要简算(1) 4 5 % ... >>

脱式计算,能简算的要简算(1) 4 5 % ...

脱式计算,能简算的要简算。 5/6-1/12+1/4-5/12 =10/12-1/12+3/12-5/12 =9/12+3/12-5/12 =12/12-5/12 =7/12

(1/6+1/9-1/12)×36 = 1/6 ×36 +1/9 × 36 -1/12×36 =6+4-3 =7

8.4

分别是119,1486,184,18,691.24

五分之四加(八分之三减四分之一)脱式计算能简算的要简算 五分之四加(八分之三减四分之一) =4/5+3/8-1/4 =32/40+15/40-10/40 =(32+15-10)/40 =37/40

(1)807×99+807,=807×(99+1),=807×100,=80700;(2) 25× 1 3 × 2 5 × 3 10 ,=(25× 2 5 )×( 1 3 × 3 10 ),=10× 1 10 ,=1;(3)0.6+3.1+5.4+6.9,=(0.6+5.4)+(3.1+6.9),=6+10,=16;(4) [1-( I 2 - 1 4 )]× 2 5 ,=[1- 1 4...

3/4+5/9+1/6-5/9 =3/4+1/6+5/9-5/9 =11/12

7分之12—(7分之5+2分之1) =12/7-5/7-1/2 =7/7-1/2 =1-1/2 =1/2 [1—(4分之1+8分之3)]除以4分之1 =(1-1/4-3/8)x4 =1x4-1/4x4-3/8x4 =4-1-3/2 =3-3/2 =3/2 =1又1/2 8分之1 x 58+8分之1 x 42 =1/8x(58+42) =1/8x100 =100/8 =12又1/2 5分之4 x ...

(1)9.07-22.78÷1.7=9.07-13.4=-4.33(2)1.05÷0.7+18.9=1.5+18.9=20.4(3)21.5÷0.05×0.96=430×0.96=412.8(4)0.4×5÷0.4×5=0.4÷0.4×5×5=1×5×5=25(5)(7.5-2.3×0.4)÷0.01=(7.5-0.92)÷0.01=6.58÷0.01=658(6)10÷4÷12.5=10÷(4×12.5)=10÷...

网站首页 | 网站地图
All rights reserved Powered by www.ldcf.net
copyright ©right 2010-2021。
内容来自网络,如有侵犯请联系客服。zhit325@qq.com