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6年级括号四分之一加九分之二括号乘以三点六这道题...

(1/4+2/9)×3.6 =1/4×3.6+2/9×3.6 =0.9+0.8 =1.7

一般算法:24×(1/4+1/6)=24x(3/12+2/12)=24×5/12=10简便算法:24×(1/4+1/6)=24×1/4+24×1/6=6+4=10

(1+1/2)×(1+1/3)×(1+1/4)×……×(1+1/10) =(2/2+1/2)×(3/3+1/3)×(4/4+1/4)×……×(10/10+1/10) =3/2×4/3×5/4×……×11/10 =11/2 =5.5

三十六分之二十九

原式=(1/2+1/3+1/4)×12 =1/2×12+1/3×12+1/4×12 =6+4+3=13 请采纳一下

我去,看不懂求数字

(3/4-3/16)×(2/9+1/3) =9/16×5/9 =5/16

解: 3/4-3/16*(2/9+1/3) =3/4-3/16 *(2+3)/9 =3/4-3/16*5/9 =3/4-5/48 =(36-5)/48 =31/48

=(1/6+1/8)×24 =1/6×24+1/8×24 =4+3 =7

等于4/3

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