計算下面各題(能簡便的用簡便方法計算

時間 2021-05-05 23:19:55

1樓:馴魚

(1)6 5

×215

+215 ÷4

5,=6 5

×215

+215

×5 4

,=215

×(6 5

+5 4

),=2 15

×4920

,=49

150;

(2)8 3

×(1 3

-821

×816

),=8 3

×(1 3

-421

),=8 3

×1 7

,=821

;(3)9

10×11-9

10,=9

10×(11-1),

=9 10

×10,=9.

脫式計算:一、用簡便方法計算下面各題。⒈6/5×2/15×2/15×4/5 = = = =

2樓:樂為人師

6/5×2/15+2/15×4/5

=(6/5+4/5)×2/15

=2×2/15

=4/15

用簡便方法計算下面各題: 3/9×8 3/9×2 6/5×2/15+2/15×4/5 36×(1

3樓:匿名使用者

用簡便方法計算下面各題:

3/9×8 +3/9×2

=3/9×(8+2)

=1/3×10

=10/3

6/5×2/15+2/15×4/5

=2/15×(6/5+4/5)

=2/15×2

=4/15

36×(

專1/3-5/18+7/12)

屬=36×1/3-36×5/18+36×7/12=12-10+21=23

計算下面各題(能簡便的用簡便方法) 1/5+7/15+4/15 7/10-(3/4-2/5) 1-7/15-2/5 13/15-(1/3+2/5)

4樓:奈貞韻板婧

你說的女孩房間時都會發生地方還是大家發揮

用簡便方法計算下面各題6/5-6/11-5/11× 10

5樓:葉聲紐

用簡便方法計算下面各題6/5-6/11-5/116/5=6/11-5/11

=6/5-(6/11+5/11)

=6/5-1

=1/5.

計算下面各題能用簡便方法的要用簡便運算5/8×24/25-1/4

6樓:彭曠穰青文

(1)8分之5*25分之4+6分之1/12分之5=5/8*4/25+1/6*12/5

=1/10+2/5

=1/10+4/5

=1/2

(2)[1-(4分之1-8分之1)]*7分之5=[1-2/8+1/8]*5/7

=7/8*5/7

=5/8

2-13分之9+26分之15-4分之3

=2-18/26+15/26-3/4

=2-3/26-3/4

=2-6/52-39/52

=2-45/52

=59/52

計算下面各題.(能簡便計算的要簡便計算)4.2×(6.18-3.03)+6.315.02-6.8-(1.02+1.2)0.6×[(5-0.68

7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,能用簡便方法的要用簡便方法計算。急急急急急急急急急急急急急急急急!!!!

8樓:匿名使用者

(15-8)×十四分之五

=7×十四分之五

=十四分之三十五

9樓:匿名使用者

(15-8)x5/14=5/2

計算下面各題,能用簡便方法的就用簡便方法計算.(1)15.52-1.6×5-5.7 (2)9.83×1.5+6.17×1.5(3)1

10樓:二二二

(zhi1)15.52-1.6×dao5-5.7,內=15.52-8-5.7,

=7.52-5.7,

=1.82;容

(2)9.83×1.5+6.17×1.5,=1.5×(9.83+6.17),

=1.5×16,

=1.5×2×8,

=24;

(3)19.8-0.6×0.6-0.64,=19.8-0.36-0.64,

=19.8-(0.36+0.64),

=19.8-1,

=18.8;

(4)0.125×7.9×8,

=0.125×8×7.9,

=1×7.9,

=7.9;

(5)63×10.1,

=63×(10+0.1),

=63×10+63×0.1,

=630+6.3,

=636.3;

(6)21.5÷[(6.07+2.53)×0.5],=21.5÷[8.6×0.5],

=21.5÷[0.5×2×4.3]

=21.5÷4.3,=5.

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