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13乘以12的横式计算 计算:(1)312+(-12)-(-13)+223 &nbs.

火烧 2022-08-26 09:33:02 1160
计算:(1)312+(-12)-(-13)+223 am . 计算:(1)312+(-12)-(-13)+223 am .(1)原式=(3 1 2 - 1 2 )+( 1 3 +2 2 3 )=3+3

计算:(1)312+(-12)-(-13)+223 &nbs.  

计算:(1)312+(-12)-(-13)+223 &nbs.

(1)原式=(3

1 2

-

1 2

)+(

1 3

+2

2 3

)=3+3=6;
(2)原式=-2×

1 4

-8+

1 2

=-

1 2

-8+

1 2

=-8.

计算:-312?(?13)+223+(?12)

原式=-3

1 2

-

13乘以12的横式计算 计算:(1)312+(-12)-(-13)+223 &nbs.
1 2

+

1 3

+2

2 3

=-4+3=-1.

312+<-12>-<-13>+223的解答过程

原式
=312-12+13+223
=300+236
=536

计算:(1)-2+6÷(-2)×12; &nbs.

(1)原式=-2+6×(-

1 2

)×

1 2

=-2-

3 2

=-

7 2

;                   
(2)原式=-8-

2 3

×6=-8-4=-12.

312+(-12)-(-13)+223的答案是多少

解: 312+(-12)-(-13)+223=312-12+13+223=536

计算:(1)230×2÷5 &nbs.

(1)230×2÷5  
=460÷5
=92;

(2)960÷3×4
=320×4
=1280;

(3)98+2×10  
=98+20
=118;

(4)25×(400-396)
=25×4
=100.

计算:(1)38-425; &nbs.

(1)原式=2-

2 5

=

8 5


(2)原式=4x2?y3÷xy2=4xy.

脱式计算12×32-225 &nbs.

(1)12×32-225
=384-225
=159;
                             
(2)(623-178)÷6
=445÷6
=74…1.

计算:(1)(-2+3)-(-1)×4 &nbs.

(1)原式=1+4
=5;
(2)原式1-36×

3 4

+36×

1 6

+36×

7 9

=1-27+6+28
=8.

脱式计算.①480÷8×1 &nbs.

①480÷8×1
=60×1
=60;

②125+19×4
=125+76
=201;

③1000-37×18
=1000-666
=334;

④46×(300-283)
=46×17
=782.

  
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