計算下面各題(能簡算的要簡算)48 2 3 1250(0 8 0 4)7 34 2 1 7 34 7 8 7 34 1 120 5

2021-03-30 12:36:23 字數 4051 閱讀 4205

1樓:淹了學校

①48-2.3×12,

=48-27.6,

=20.4;

②50×(0.8+0.4),

=50×0.8+50×0.4,

=40+20,

=60;

③7.34×2.1+7.34×7.8+7.34×1.1,=7.34×(2.1+7.8+1.1),

=7.34×10,

=73.4;

④20.5÷1.25÷0.8,

=20.5÷(1.25×0.8),

=20.5÷1,

=20.5;

⑤(8.1-5.4)÷3.6+85.7,

=2.7÷3.6+85.7,

=0.75+85.7,

=86.45;

⑥9.88×9+9.88,

=9.88×(9+1),

=9.88×10,

=98.8.

計算下面各題.(能簡便的要用簡便方法計算)2.3+3.91÷(22-19.7)21.6÷[64.8-(48.6-2.7×2)]0.25×0

2樓:手機使用者

(1)2.3+3.91÷(22-19.7)=2.3+3.91÷2.3

=2.3+1.7

=4(2)21.6÷[64.8-(48.

6-2.7×2)]=21.6÷[64.

8-(48.6-5.4)]=21.

6÷[64.8-43.2]

=21.6÷21.6

=1(3)0.25×0.03×4

=(0.25×4)×0.03

=1×0.03

=0.03

0.13×3.89+0.13×5.11

=0.13×(3.89+5.11)

=0.13×9

=1.17

(5)10.1×87

=(10+0.1)×87

=10×87+0.1×87

=870+8.7

=878.7

計算下面各題.(能簡算的要簡算)(1)36×17÷51(2)48×125(3)84×184-84×84(4)10000-(59+62)

3樓:斯元駒

(1)36×17÷51,

=612÷51,

=12;

(2)48×125,

=(40+8)×125,

=5000+1000,

=6000;

(3)84×184-84×84,

=84×(184-84),

=84×100,

=8400;

(4)10000-(59+62)×21,

=10000-121×21,

=10000-2541,

=7459.

計算下面各題能簡算的要簡便計算.32÷(11.08-1.48)×0.811.1×3.58+11.1×5.42 17 20 -

4樓:star演奏9wf鰔

(1)32÷(11.08-1.48)×0.8,=32÷9.6×0.8,

=10 3

×0.8,

=8 3

;(2)11.1×3.58+11.1×5.42,=11.1×(3.58+5.42),

=11.1×9,

=99.9;

(3)17

20-3 5

+5 6

,=1 4

+5 6

,=13

12;(4)33 5

+711

-3 5

+411

,=(33 5

-3 5

)+(4

11+7

11),

=3+1,=4.

計算下面各題,怎樣簡便就怎樣算. 432÷36+12×23000÷25÷48.46-2.25-3.7572×125135×67-67×35812÷

5樓:離殤必死

(1)432÷36+12×2,

=12+24,

=36;

(2)3000÷25÷4,

=3000÷(25×4),

=3000÷100,

=30;

(3)8.46-2.25-3.75,

=8.46-(2.25+3.75),

=8.46-6,

=2.46;

(4)72×125,

=(8×9)×125,

=8×125×9,

=1000×9,

=9000;

(5)135×67-67×35,

=(135-35)×67,

=100×67,

=6700;

(6)812÷(532-36×14),

=812÷(532-504),

=812÷28,

=29.

計算下面各題,能簡算的要簡算

6樓:庸人自擾

(1)(308-236)÷12×18

=72÷12×18

=6×18

=108;

(2)42×12-750÷25

=504-30

=474;

(3)48×101-48

=48×(101-1)

=48×100

=4800;

(4)9.14-2.47-3.53

=9.14-(2.47+3.53)

=9.14-6

=3.14.

計算下面各題,能簡便的要簡算1.485-720/(15*12) 2.8*(48分一+125) 3.18*10.2

7樓:

1.485-720/(15*12)

=485-4

=481

2.8*(48分一+125)

=8*1/48+8*125

=1000+1/6

3.18*10.2

=18*(10+0.2)

=18*10+18*0.2

=180+3.6

=183.6

脫式計算下面各題(1)8.48÷0.8×0.9(2)615+38.5×7.2+38.5×2.8(3)(12-3.74)÷(8×0.3+2×1.3)

8樓:秋梵茜茜

①8.48÷0.8×0.9,

=10.6×0.9,

=9.54;

②615+38.5×7.2+38.5×2.8,=615+(7.2+2.8)×38.5,

=615+385,

=1000;

③(12-3.74)÷(8×0.3+2×1.3),=8.26÷(2.4+2.6),

=8.26÷5,

=1.652;

④[7.35+2.25×(0.

55-0.15)]÷0.825,=[7.

35+2.25×0.4]÷0.

825,=[7.35+0.9]÷0.

825,

=8.25÷0.825,

=10.

用簡便方法計算下面各題.(1)1500-28-272(2)99×48+48(3)2000÷125÷8(4)77+2.14+23+7.86.

9樓:沫沫

(1)1500-28-272,

=1500-(28+272),

=1500-300,

=1200;

(2)99×48+48,

=(99+1)×48,

=100×48,

=4800;

(3)2000÷125÷8,

=2000÷(125×8),

=2000÷1000,

=2;(4)77+2.14+23+7.86,=(77+23)+(2.14+7.86),=100+10,

=110.

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