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脱式计算简算题四年级 脱式计算,能简算的要简算.(1)( 5 6 + 7 12 + 3 8 )÷ 1

火烧 2022-07-17 04:19:38 1138
脱式计算,能简算的要简算.(1)( 5 6 + 7 12 + 3 8 )÷ 1 脱式计算,能简算的要简算.(1)( 5 6 + 7 12 + 3 8 )÷ 1 (1)( 5 6 + 7 12 + 3

脱式计算,能简算的要简算.(1)( 5 6 + 7 12 + 3 8 )÷ 1  

脱式计算,能简算的要简算.(1)( 5 6 + 7 12 + 3 8 )÷ 1

(1)(

5 6 +

7 12

+

3 8

)÷

1 48


=(

5 6

+

7 12

+

3 8

)×48,
=

5 6

×48+

7 12

×48+

3 8

×48,
=40+28+18,
=86;

(2)[1-(

1 2

+

1 3

)×

1 5

5 6


=[1-(

3 6

+

2 6

)×

1 5

6 5


=[1-

5 6

×

1 5

6 5


=[1-

1 6

6 5


=

5 6

×

6 5


=1;

(3)6.46-(5.37-3.54),
=6.46-5.37+3.54,
=(6.46+3.54)-5.37,
=10-5.37,
=4.63;

(4)5.58-

3 5

+5.42-

2 5


=(5.58+5.42)-(

3 5

+

2 5

),
=11-1,
=10.

脱式计算,能简算的要简算. 3 5 + 1÷( 5 6 - 5 8 ) ( 5 6 +

(1)

3 5 +1÷(

5 6

-

5 8

),
=

3 5

+1÷(

20 24

-

15 24

),
=

3 5

+1÷

5 24


=

3 5

+1×

24 5


=

27 5

(2)(

5 6

+

2 3

-

3 4

)×24,
=

5 6

×24+

2 3

×24-

3 4

×24,
=20+16-18,
=18;

(3)

2 3

+(

4 5

-

1 6

)×

8 18


=

2 3

+(

24 30

-

5 30

)×

4 9


=

2 3

+

19 30

×

4 9


=

2 3

+

38 135


=

90 135

+

38 135


=

128 135

(4)0.625×9.6+62.5%×

2 5


=0.625×9.6+0.625×0.4,
=(9.6+0.4)×0.625,
=10×0.625,
=6.25.

脱式计算(能简算的简算).( 1 8 + 5 12 - 1 6 )×481.25×64×2.5

(1)(

1 8 +

5 12

-

1 6

)×48,
=

1 8

×48+

5 12

×48-

1 6

×48,
=6+20-8,
=18;

(2)1.25×64×2.5×0.5,
=1.25×8×4×2×2.5×0.5,
=1.25×8×(4×2.5)×(2×0.5),
=10×10×1,
=100;

(3)693×99+693,
=(99+1)×693,
=100×693,
=69300;

(4)

9 20

÷[

1 2

×(

2 5

+

4 5

)],
=

9 20

÷[

1 2

×

6 5

],
=

9 20

÷

3 5


=

9 20

×

5 3


=

3 4

脱式计算,能简算的要简算 11 12 -( 1 6 + 1 8 )   8 9

(1)

11 12 -(

1 6

+

1 8

),
=

22 24

-(

4 24

+

3 24

),
=

22 24

-

7 24


=

5 8

(2)

8 9

-

1 6

+

1 9

-

1 6


=(

8 9

+

1 9

)-(

1 6

+

1 6

),
=1-

1 3


=

2 3

(3)1-

1 4

+

3 4


=

3 4

+

3 4


=

3 2

(4)

1 2

-(

3 4

-

3 8

),
=

4 8

-(

6 8

-

3 8

),
=

4 8

-

3 8


=

1 8

脱式计算.(能简算的要简算)( 3 4 + 1 2 - 7 12 )×24 ( 5

(1)(

3 4 +

1 2

-

7 12

)×24,
=24×

3 4

+

1 2

×24-

7 12

×24,
=18+12-14,
=30-14,
=16;

(2)(

5 12

×

3 4

)× 1

1 3


=

5 12

×(

3 4

× 1

1 3

),
=

5 12

×1,
=

5 12

(3)

15 16

÷(

5 12

÷

5 8

+

3 8

),
=

15 16

÷(

2 3

+

3 8

),
=

15 16

÷

25 24


=

9 10

(4)1.25×38+125%×3-5÷4,
=1.25×38+1.25×3-1.25,
=1.25×(38+3-1),
=1.25×40,
=50.

脱式计算(能简算的要简算) ( 4 5 + 1 4 )÷ 7 3 + 7 1

脱式计算简算题四年级 脱式计算,能简算的要简算.(1)( 5 6 + 7 12 + 3 8 )÷ 1
(1)(

4 5 +

1 4

)÷

7 3

+

7 10


=

21 20

÷

7 3

+

7 10


=

9 20

+

14 20


=

23 20

(2)

5 19

×

1 4

+

13 19

×

1 4


=(

5 19

+

13 19

)×

1 4


=

18 19

×

1 4


=

9 38

(3)7.6×35%+6.5×0.76,
=7.6×0.35+0.65×7.6,
=7.6×(0.35+0.65),
=7.6×1,
=7.6;

(4)

13 49

×21+13×

28 49


=

21 49

×13+13×

28 49


=(

21 49

+

28 49

)×13,
=1×13,
=13.

脱式计算(能简算的要简算)(1) 6 7 ÷[( 4 7 - 1 2 )× 2 5 ]

(1)

6 7 ÷[(

4 7

-

1 2

)×

2 5

]
=

6 7

÷[

1 14

×

2 5

]
=

6 7

÷

1 35

=

6 7

×35
=30;

(2)

14 15

×25%-

11 15

÷4
=

14 15

×

1 4

-

11 15

×

1 4

=(

14 15

-

11 15

)×

1 4

=

1 5

×

1 4

=

1 20

(3)1.28×2.37-2.8×0.237
=1.28×2.37-0.28×2.37
=(1.28-0.28)×2.37
=1×2.37
=2.37;

(4)(

5 12

+

1 19

)×12+

7 19

=

5 12

×12+

1 19

×12+

7 19

=5+(

12 19

+

7 19


=5+1
=6.

脱式计算,能简算的要简算.(1)8.4× 1 10 +1.6÷10 (2) 3 7 ÷ 5 6

(1)8.4×

1 10 +1.6÷10
=8.4×

1 10

+1.6×

1 10


=(8.4+1.6)×

1 10


=10×

1 10


=1;

(2)

3 7

÷

5 6

+

4 7

×

6 5

=

3 7

×

6 5

+

4 7

×

6 5


=(

3 7

+

4 7

)×

6 5


=1×

6 5


=

6 5

(3)(

1 17

+

1 4

)×4+

3 17

=

1 17

×4+

1 4

×4+

3 17


=

4 17

+

3 17

+1,
=1

7 17

(4)12.5-(8.5+0.625÷62.5%)
=12.5-(8.5+1),
=12.5-9.5,
=3.

脱式计算,能简算的要简算.15.8- 7 8 + 1 5 - 11 18 1 8

(1)15.8-

7 8 +

1 5

-

11 18


=15

4 5

-

7 8

+

1 5

-

11 18


=(15

4 5

+

1 5

)-(

7 8

+

11 18

),
=16-1

35 72


=14

37 72

(2)

1 8

÷[(

1 2

+

1 3

)×

3 10

],
=

1 8

÷[

5 6

×

3 10

],
=

1 8

÷

1 4


=

1 2

(3)61

1 11

÷12,
=61

1 11

×

1 12


=(60+

12 11

)×

1 12


=60×

1 12

+

12 11

×

1 12


=5+

1 11


=5

1 11

(4)2+20×(

1 4

-

1 5

),
=2+[20×

1 4

-20×

1 5

],
=2+[5-4],
=2+1,
=3;

(5)4×0.28×2.5,
=(4×2.5)×0.28,
=10×0.28,
=2.8.

脱式计算,能简算的要简算. 5 6 -( 2 3 - 1 9 ) 1 2 +

(1)

5 6 -(

2 3

-

1 9

),
=

5 6

-

5 9


=

5 18

(2)

1 2

+

4 5

-

3 10


=

13 10

-

3 10


=1;

(3)32-

7 15

-

8 15


=32-(

7 15

+

8 15

),
=32-1,
=31;

(4)

9 10

-

3 4

+

1 10

-

1 4


=(

9 10

+

1 10

)-(

3 4

+

1 4

),
=1-1,
=0.

  
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