計算下面各題(能簡便計算的要用簡便方法計算

2021-03-17 01:59:21 字數 6705 閱讀 9195

1樓:擾龍樂戎

(1)456-199,

=456-200+1,

=256+1,

=257;

(2)0.25×5.7×4,

=0.25×4×5.7,

=1×5.7,

=5.7;

(3)252÷24-0.4×6,

=10.5-2.4,

=8.1;

(4)(3.8-1.8÷2)×12,

=(3.8-0.9)×12,

=2.9×12,

=1.45;

(5)(8+4

9)÷4,

=(8+4

9)×14,

=8×14+4

9×14,

=2+19,

=219

;(6)4.4-1

5+1.6-45,

=(4.4+1.6)-(15+4

5),=6-1,=5.

計算下面各題,能簡便計算的用簡便方法計算.4.82-5.2÷0.8×0.6 [ 1 2 -( 3 4

2樓:路肯霘

(1)4.82-5.2÷0.8×0.6,62616964757a686964616fe58685e5aeb931333335336530

=4.82-6.5×0.6,

=4.82-3.9,

=0.92;

(2)[1 2

-(3 4

-3 5

)]÷7

10,=[1 2

-320

]÷710

,=720

÷710

,=1 2

;(3)7 9

×511

+2 9

×511

,=(7 9

+2 9

)×511

,=1×5

11,=5

11;(4)12.3×99,

=12.3×(100-1),

=12.3×100-12.3×1,

=1230-12.3,

=1217.7;

(5)57.5-14.25-153 4

,=57.5-(14.25+153 4

),=57.5-30,

=27.5;

(6)3.2×12.5×0.25,

=8×0.4×12.5×0.25,

=(8×12.5)×(0.4×0.25),=100×0.1,

=10.

計算下面各題,能簡便計算的要用簡便方法計算. 296+73+104+37 1600÷25÷4 125×54-46×125 50

3樓:憽人戾

(1)296+73+104+37,

=(296+104)+(73+37),

=400+110,

=510;

(2)1600÷25÷4,

=1600÷(25×4),

=1600÷100,

=16;

(3)125×54-46×125,

=125×(54-46),

=125×8,

=1000;

(4)50.34+11.645-42.34,=50.34-42.34+11.645,

=8+11.645,

=19.645;

(5)125×25×32,

=125×25×4×8,

=(125×8)×(25×4),

=1000×100,

=100000;

(6)99+99×99,

=99×(1+99),

=99×100,

=9900.

坑爹的老師要我們寒假寫數學題遞等式,或者簡便計算200道帶答案,各位大哥大姐跪求。 15

4樓:我叫朱一點

175-75÷25 68+35×13 725-(125+237)

(114+166)÷35 432÷(9×8) 189-60+40

三、簡便計算.

216+305 25×32 47+236+64

6×(15×9) 402+359 43+78+122+257

25×(26×4) 25×44 354+(229+46)

(1)9.26-4.38-2.62

(2)9.26-(4.38+2.26)

(3)9.26-(4.38-2.74

(1)4.75-9.64+8.25-1.36

(2)14.529+(2.471-3)

(3)38.68-(4.7-2.32)

415-176-24 8.29+3.7+0.71+6.3

125×89×8 428 ×78+572×78

3.遞等式計算.

15×27-3000÷25 216+64×42÷28 (324-285) ×12÷26

(1)60506-19460÷35

(2)23072÷412×65

(3)184×38+116×38-11300

(4)(79691-46354)÷629

(5)325÷13×(266-250)

(1)1.9÷(43.26+6.74)×3 (2)17.8+6.3÷(3.2-1.6)

(3)0.4×(3.2-0.8)÷1.2 (4) 5×[(3.2+4.06)÷6.05]

(5)68-(188.3-107.3)÷0.81÷0.9 (6)20.5+1.4×4÷0.4

45-30÷5=

200÷(25×4)=

40+60×2=

0×140+60=

一、計算並驗算各題.

1.100.485+72.68

4.40.043-12.87

二、用簡便方法計算.

1.125×560

2.45×71+29×45

3.13.6×8×125

4.13.6-4.25-5.75+6.4

.18.3-6.25-3.75+12.7

2.64×101

3.25×125×40×8

4.73×18+83×73

五、計算下面各題.

1.0.6+0.94-0.208

2.24.63-(4.63-1.85)

3.(64-224÷14)×12

4.1204×(38+405÷27)

①3871-(1080-740)×7 ②5175÷207+102×9

③0.9+1.08+0.92+0.1 ④13.59-6.91-0.09

⑤983×(3.8+2.2)+0.237×1000

⑥0.8×(35+65)×5÷100

⑦30-[17.8+(6.2+38÷10)]

1.10-5.4-4.6= 2.6-(2.4+2.2)x6

26×39+61×26

356×9-56×9

52×76+47×76+76

134×56-134+45×134

小數乘除法簡便計算專項練習

1.25×32×0.25 4.7×1.25×1.6 2.5×(13×4)

1.25×88 1.25×64×0.25 4.6×0.35+4.6×0.65

0.95×8.6-7.6×0.95 2.4×1.87-2.4×0.87 4.18+4.18×99

2.55×1.5+1.5+6.45×1.5 2.95×101-2.95 2.4-2.4×0.5

3.2×10.1 0.52×105 0.85×99 99×4.3

二、脫式計算.

175-75÷25 68+35×13 725-(125+237)

(114+166)÷35 432÷(9×8) 189-60+40

三、簡便計算.

216+305 25×32 47+236+64

6×(15×9) 402+359 43+78+122+257

25×(26×4) 25×44 354+(229+46)

1000―7200÷8

1242÷(103―49)

4032÷(36×2)

75×4+630 376+280÷70

9×60-320 6400÷80-64

2936÷4×4

(4280+3265)÷5

576÷3÷4

2427÷3+1995

8323÷4=

3002÷2=

234×3-574÷7 4326÷(61-58)

1.84÷7+35×4

2.540÷9-300÷6

3.480÷8+320÷4

4.120×3-90×2

5.30×4+60×5

6.488÷4-23×4

48÷8×7

3600-458+1204

493+25×7

305×(301-297)

35×8+43×5

650÷5-328÷4

四年級簡便計算題

184+98 695+202 864-199 738-301

(加減法接近整百數的簡算)

380+476+120 (569+468)+(432+131)

(加法交換律和結合律的運用)

256-147-53 373-129+29 189-(89+74) 456-(256-36)

(減法的簡算,重點:運算子號變化的處理)

28×4×25 125×32×25 9×72×125

(乘法交換律和結合律的運用,重點:一個因數分成兩個因數的處理)

720÷16÷5 630÷42

(除法的簡算)

102×35 98×42

(乘法接近整百數的簡算)

26×39+61×26 356×9-56×9

99×55+55 78×101-78

52×76+47×76+76 134×56-134+45×134

(乘法分配律的運用)

48×52×2-4×48

25×23×(40+4)

999×999+1999

5樓:

一看就是想偷懶,還是自己好好做吧孩子!

計算下列各題,能簡算的用簡便方法計算.26-3.17-7.83 67×38+33×38 125×25×64 29.38-(19.38-4.76)

6樓:ayの0077e薩

(1)26-3.17-7.83,

=26-(3.17+7.83),

=26-11,

=15;

(2)67×38+33×38,

=(67+33)×38,

=100×38,

=3800;

(3)125×25×64,

=125×25×4×8,

=(125×8)×(25×4),

=1000×100,

=100000;

(4)29.38-(19.38-4.76),=29.38-19.38+4.76,

=10+4.76,

=14.76;

(5)329×87-87×29,

=(329-29)×87,

=300×87,

=26100;

(6)5.8-3.62-0.38+0.2,=(5.8+0.2)-(3.62+0.38),=6-4,=2.

簡便計算大全五年級

7樓:新野旁觀者

0.25×

0.28

0.125×3.2×2.5

35×40.2

0.25×4÷0.25×4

3.5×99+3.5

3.5×101-3.5

3.5×9.9+3.5×0.1

3.5×2.7+35×0.73

3.5×2.7-3.5×0.7

(32+5.6)÷0.8

3.5÷0.6-0.5÷0.6

4.9÷3.5 7÷0.25÷4

7÷0.125 ÷8

7.35÷(7.35×0.25)

7.35÷(7.35÷0.25)

3.29+0.73+2.27

3.29-0.73-2.27

7.5+2.5-7.5+2.5

7.325-3.29-3.325

7.325-(5.325+1.7)

7.325-(5.325-1.7)

3.29+0.73-2.29+2.27

3.29×0.25×4

0.125×8.8

63.4÷2.5÷0.4

4.9÷1.4

3.9÷(1.3×5)

(7.7+1.54)÷0.7

2.5×2.4

2.7÷45

0.35×1.25×2×0.8

32.4×0.9+0.1×32.4

15÷0.25

28.6×101-28.6

0.86×15.7-0.86×14.7

2.4×102

14-7.32-2.68

2.65+8.67+7.35+11.33

2.31×1.2×0.5

(2.5-0.25)×0.4

9.16×1.5-0.5×9.16

3.6-3.6×0.5

7.6×0.8+0.2×7.6

0.85×199

0.25×8.5×4

0.25×36

0.125×3.2×2.5

35×40.2

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