計算下面各題,能簡算的要簡算14 75 624 39(7 6 3 6 2)

時間 2021-05-07 19:58:48

1樓:浮生若夢

(1)14×75-624÷39,

=1050-16,

=1034;

(2)(7.6-3.6÷2)×1.5,

=(7.6-1.8)×1.5,

=5.8×1.5,

=8.7;

(3)4 5

-(4 5

-1 2

),=4 5

-4 5

+1 2

,=0+1 2

,=1 2

;(4)4.68×78+4.68×22,

=4.68×(78+22),

=4.68×100,

=468.

計算下面各題,能簡算的要簡算 14×75-624÷39(7.6-3.6÷2)×1.545-(45-12)4.68×78+

2樓:奮兒

(1)14×75-624÷39,

=1050-16,

=1034;

(2)(7.6-3.6÷2)×1.5,

=(7.6-1.8)×1.5,

=5.8×1.5,

=8.7;

(3)4

5-(45-1

2),=45

-45+12

,=0+12,

=12;(4)4.68×78+4.68×22,

=4.68×(78+22),

=4.68×100,

=468.

計算下面各題,能簡算的要簡算.(1)975-384÷16×25 (2) 39 144 ÷( 5 6 +

3樓:手機使用者

(1)975-384÷16×25

=975-24×25,

=975-600,

=375;

(2)39

144÷(5 6

+1 4

)+1.65

=39 144

÷(10

12+3

12)+1.65,

-39 144

×1213

+1.65,

=1 4

+1.65,

=0.25+1.65,

=1.9;

(3)5.25+34 5

-1.8+23 4

=5.25+3.8-1.8+2.75,

=5.25+2.75+(3.8-1.8),=8+2,

=10;

(4)96

17×1.5-1.5×45

17=(96

17-45

17)×1.5,

=3×1.5,

=4.5;

(5)12.5×0.25×32

=12.5×0.25×8×4,

=(12.5×8)×(0.25×4),

=100×1,

=100;

(6)36×(5

18+2 9

)÷2%

=[36×5

18+36×2 9

]÷2%,

=[10+8]÷2%,

=18÷2%,

=900.

計算下面各題,能簡算的要簡算,並寫出主要的計算過程.①7.8-8.75+2.2-1.25②13.2÷(9.4-5)+5.32③1-

4樓:可樂

①7.8-8.75+2.2-1.25,

=(7.8+2.2)-(8.75+1.25),=10-10,

=0;②13.2÷(62616964757a686964616fe78988e69d83313333353331389.4-5)+5.32,

=13.2÷4.4+5.32,

=3+5.32,

=8.32;

③1-3 7

-4 7

,=1-(3 7

+4 7

),=1-1,

=0;④13

17-(5

17+1

10),

=13 17

-517

-1 10

,=8 17

-110

,=63

170;

⑤1 5

+(5 6

-1318

),=1 5

+(15

18-13

18) ,

=1 5

+1 9

,=1445.

計算下面各題,能簡算的要簡算。 45×(3/5+5/9) 3/14÷【6/7×(1/3+1/4)】 (7/3+7/4-7/12)×6/7

5樓:匿名使用者

45×(3/5+5/9) = 45×8/9 = 40

3/14÷【6/7×(1/3+1/4)】= 3/14÷【6/7×12/7】= 3/14÷2 = 3/28

(7/3+7/4-7/12)×6/7 = 7/3×6/7+7/4×6/7-7/12×6/7 = 2+3/2-1/2 = 3

(2/3-5/9×3/5)÷7/16 =(2/3-1/3)÷7/16 = 1/3*16/7 = 16/21

1/9×3+1/9×5+1/9 = 3/9+5/9+1/9 = 9/9 = 1

7/8×3/7+7/8 = 3/8+7/8 = 10/8 = 5/4

(1/2+11/8×3/2)÷1/2 = (1/2+11/8×3/2)×2 = 1/2×2+11/8×3/2×2 = 1 + 33/8 = 41/8

(1/3+1/5+1/15)×15 = 1/3×15 +1/5×15+1/15×15 = 5+3+1 = 9

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