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四年级脱式计算100道带答案 40道脱式计算

火烧 2022-04-06 19:49:43 1132
40道脱式计算 40道脱式计算178×101-17884×36+64×8475×99+2×7583×102-83×298×199123×18-123×3+85×12350× 34×4 ×325×(24

40道脱式计算  

40道脱式计算

178×101-178
84×36+64×84
75×99+2×75
83×102-83×2
98×199
123×18-123×3+85×123
50×(34×4)×3
25×(24+16)
178×99+178
79×42+79+79×57

840÷40-400÷40脱式计算

840÷40-400÷40
=21-10
=11

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脱式计算40+360&40-20

不知道&表示是什么数学运算符号,以除号为例,计算如下:
40+360÷40-20
解:
40+360÷40-20
=40+9-20
=29

0.25×0.75×40脱式计算

0.25×0.75×40
=0.25×40×0.75
=10×0.75
=7.5

脱式计算6.25-40÷

(1)6.25-40÷16×2.5,
=6.25-2.5×2.5,
=6.25-6.25,
=0;

(2)1.8×0.2+2.2×25%,
=0.36+0.55,
=0.91;

(3)2700×(506-499)÷900,
=2700×7÷900,
=18900÷900,
=21;

(4)33.02-(148.4-90.85)÷2.5,
=33.02-57.55÷2.5,
=33.02-23.02,
=10;

(5)18.1÷(3-0.299+0.23)×1,
=18.1÷(2.701+0.23)×1,
=18.1÷2.931×1,
=

18100 2931

×1,
=

18100 2931

0.25*6.5*40脱式计算

原式
=0.25×40×6.5
=10×6.5
=65

脱式计算280÷(7十40)

280÷(7+40)
=280÷47
≈5.957

脱式计算. 6.25-40÷16

(1)6.25-40÷16×2.5,
=6.25-2.5×2.5,
=6.25-6.25,
=0;

(2)

1 12

+(4

5 12

-3

1 2

)÷

11 24


=

1 12

+

11 12

÷

11 24


=

1 12

+2,
=2

1 12

(3)[

3 5

-(

3 4

?

2 5

)]÷4,
=[

3 5

+

2 5

-

3 4

]÷4,
=(1-

3 4

)÷4,
=

1 4

÷4,
=

1 16

(4)[0.8×(

3 5

+

27 10

×

8 9

)]÷30%,
=[0.8×(

3 5

+

27 10

×

8 9

)]÷30%,
=[0.8×(

3 5

+

12 5

)]÷30%,
=[0.8×3]÷30%,
=2.4÷0.3,
=8.

40×12-240脱式计算

40×12-240脱式计算
解:直接运算最简便
原式=480-240
=240

脱式计算①6.25-40÷16

①6.25-40÷16×2.5,
=6.25-2.5×2.5,
=6.25-6.25,
=0;

1 12

+(4

5 12

-3

1 2

)÷

四年级脱式计算100道带答案 40道脱式计算
11 24


=

1 12

+

11 12

÷

11 24


=

1 12

+2,
=2

1 12

  
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