計算下面各題(能簡便計算的要簡便計算)4 2(

2021-03-17 02:03:35 字數 2624 閱讀 9809

1樓:匿名使用者

(1)4.2×(6.18-3.03)+6.3,=4.2×3.15+6.3,

=13.23+6.3,

=19.53;

(2)15.02-6.8-(1.02+1.2),=15.02-6.8-1.02-1.2,

=(15.02-1.02)-(6.8+1.2),=14-8,

=6;(3)0.6×[(5-0.68)÷1.2],=0.6×[4.32÷1.2],

=0.6×3.6,

=2.16;

(4)2.7÷4+6.3×0.25,

=2.7×0.25+6.3×0.25,

=(2.7+6.3)×0.25,

=9×0.25,

=2.25;

(5)(6.02+2.8)÷0.4-2.05,=8.82÷0.4-2.05,

=22.05-2.05,

=20;

(6)3.08×3.5+6.2×3.08+3.08×0.3,=(3.5+6.2+0.3)×3.08,

=10×3.08,

=30.8.

計算下面各題.(能簡便計算的要簡便計算

2樓:練繡

(1)4.2×(6.18-3.03)

=4.2×3.15

=13.23

(2)4.5÷1.8

=4.5÷(9×0.2)

=4.5÷9÷0.2

=0.5÷0.2

=2.5

(3)5.4×12-5.4-5.4

=5.4×(12-1-1)

=5.4×10

=54(4)(6.02+2.8)÷0.4-2.05=8.82÷0.4-2.05

=22.05-2.05

=20(5)15.02-6.8-(1.02+1.2)=15.02-6.8-1.02-1.2

=(15.02-1.02)-(6.8+1.2)=14-8

=6(6)3.08×3.5+6.2×3.08+3.08×0.3=3.08×(3.5+6.2+0.3)

=3.08×10

=30.8

計算下面各題(能簡便的用簡便方法計算).10.15-10.75×0.4-5.75.8×(3.87-0.13)+4.2×3.7432.52-(6+

3樓:慄鎖

(bai1)10.15-10.75×

du0.4-5.7,

zhi=10.15-4.3-5.7,

=10.15-(dao4.3+5.7),

=10.15-10,

=0.15;

(2)5.8×(3.87-0.13)+4.2×3.74,=5.8×3.74+4.2×3.74,

=(5.8+4.2)×專3.74,

=10×3.74,

=37.4;

(3)32.52-(6+9.728)÷屬3.2×2.5,=32.52-15.728÷3.2×2.5,=32.52-4.915×2.5,

=32.52-12.2875,

=20.2325;

(4)[(7.1-5.6)×0.9-1.15]÷2.5,=[1.5×0.9-1.15]÷2.5,

=[1.35-1.15]÷2.5,

=0.2÷2.5,

=0.08;

(5)5.4÷[2.6×(3.7-2.9)+0.62],=5.4÷[2.6×0.8+0.62],

=5.4÷[2.08+0.62],

=5.4÷2.7,

=2;(6)[20-(90.75÷6.6+2.25)]×11.6,=[20-(13.75+2.25)]×11.6,=[20-16]×11.6,

=4×11.6,

=46.4.

計算下面各題,能用簡便計算方法的用簡便方法計算(120-8×6)÷3 82+17×6-132

4樓:聖手

你好:為你提供精確解答

(120-8×6)÷3 =120÷3-8×6÷3=40-8×2=40-16=24

82+17×6-132=17×6-50=102-50=52謝謝,不懂可追問

5樓:淨壇使者

( 120 - 8 x 6 ) / 3

= ( 3 x 40 - 8 x 2 x 3 ) / 3= 3 x ( 8 x 5 - 8 x 2 ) / 3= 8 x ( 5 - 2 )

= 8 x 3

= 24

82 + 17 x 6 - 132

= 102 - 50

= 52

6樓:只當涼風付年華

1,原式=120/3-8*(6/3)=40-16=24

2,原式=4+78+17*6-6*22,然後乘法分配率。4+6*13+17*6-6*22=4+6*(13+17-22)=52

打擊複製。。

7樓:psy沉思

(120-8×6)÷3=120÷3-8×(6÷3)=40-8×2=40-16=24

82+17×6-132=17×6+82-132=17×6-50=102-50=52

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