50个脱式计算 5/8一(1/8十1/3)脱式计算
5/8一(1/8十1/3)脱式计算
5/8一(1/8十1/3)脱式计算
5/8-(1/8+1/3)
=5/8-1/8-1/3
=4/8-1/3
=1/2-1/3
=3/6-2/6
=1/6
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脱式计算( 5 7 - 5 8 )÷ 5 56 ( 1 6 × 3 8
(1)( 5 7 - 5 8)÷
5 56,
=(
-
5 8)×
56 5,
=
×
56 5-
5 8×
56 5,
=8-7,
=1;
(2)(
1 6×
3 8)×24,
=
×
3 8×24,
=
;
(3)
2 3÷(1-
4 9),
=
÷
5 9,
=
×
9 5,
=
.
脱式计算. 15 8 ÷(1÷ 5 3 ) 3 4 × 7 10 ÷
(1) 15 8 ÷(1÷ 5 3
),
=
÷
3 5,
=
;
(2)
3 4×
7 10÷
8 5,
=
÷
8 5,
=
;

(3)
7 9×
8 13×
9 7,
=
×
9 7×
8 13,
=
.
(8-9╱4÷1╱3)×9╱5脱式计算
(8-9╱4÷1╱3)×9╱5脱式计算
=8*9/5-9/4*3*9/5
=72/5-243/20
=(72*4)/(5*4)-243/20
=288/20-243/20
=45/20
=2.25
脱式计算. 2÷ 8 5 × 25 24 [1-( 1 2 + 1 3 )]×36
2÷ 8 5 × 25 24,
=2×
×
25 24,
=
;
(2)[1-(
1 2+
1 3)]×36,
=[1-
]×36,
=
×36,
=6.
脱式计算 5 8 ÷( 3 5 ÷ 4 15 -1) 7.5×24+22÷
① 5 8 ÷( 3 5÷
4 15-1),
=
÷(
3 5×
15 4-1 ),
=
÷
5 4,
=
×
4 5,
=
;
②7.5×24+22÷0.4,
=(7.5×2)×12+22÷
,
=15×12+22×
,
=180+55,
=235.
脱式计算①6 7 8 ×7 5 8 ②( 2 29 + 3 23 )×29×23③1
①6 7 8 ×7 5 8,
=
×
61 8,
=
;
②(
2 29+
3 23)×29×23,
=(
+
3 23)×(29×23),
=
×(29×23)+
3 23×(29×23),
=(
×29)×23+
3 23×23×29,
=2×23+3×29,
=46+87,
=133;
③1+2
1 8+3
1 12+4
1 20+5
1 30+6
1 42+7
1 56+8
1 42+9
1 42,
=1+(2+
)+(3+
1 12)+(4+
1 20)+(5+
1 30)+(6+
1 42)+(7+
1 56)+(8+
1 42)+(9+
1 42),
=(1+2+3+…+9)+(
+
1 12+…+
1 42),
=45+(
+
1 3-
1 4+
1 4-
1 5+
1 5-
1 6+
1 6-
1 7+
1 7-
1 8+
1 42+
1 42),
=45+(
+
1 42),
=45+
,
=45
;
④36÷6666 2,
=
,
=
×
6 6666,
=
×
1 1111,
=
.
脱式计算.①( 1 2 - 3 8 )÷ 3 4 ②[1-( 1 4 + 3
①( 1 2 - 3 8)÷
3 4=
1 8÷
3 4=
1 6;
②[1-(
1 4+
3 8)]÷
1 4=(1-
5 8)÷
1 4=
3 8×4
=1
;
③
5 9+
7 9-1.625-2.375+3
=
-4+3
=
-1
=
;
④[
1 2-(
3 4-
3 5)]÷
7 10=(
1 2-
3 20)÷
7 10=
7 20×
10 7=
1 2.
脱式计算.8÷(1-0.96)×0.06×8.41 5 6 ×[( 2 5 + 2 3 )÷
(1)8÷(1-0.96)×0.06×8.41,=8÷0.04×0.06×8.41,
=200×0.06×8.41,
=12×8.41,
=100.92;(2) 5 6
×[(
2 5+
2 3)÷
5 6],
=
×[
16 15×
6 5],
=
×
16 15×
6 5,
=
;
(3)(
9 35×7-
3 5)÷
3 4,
=(
-
3 5)÷
3 4,
=
×
4 3,
=
;
(4)[1-(
3 8-
3 8)]×
4 25,
=[1-0]×
,
=1×
,
=
.
脱式计算 3 4 - 2 3 ×( 5 8 - 1 2 )570-9856÷32
(1) 3 4 - 2 3×(
5 8-
1 2),
=
-
2 3×
1 8,
=
-
1 12,
=
;
(2)570-9856÷32,
=570-308,
=262.