六年级数学100道脱式计算带过程带答案 急急急 ！！！

1、1.25×(8+10)

=1.25×8+1.25×10

=10+12.5

=22.5

2、1.24+0.78+8.76

=(1.24+8.76)+0.78

=10+0.78

=10.78

3、1/2-(4/5-1/2)

=1/2+1/2-4/5

=1-4/5

=1/5

4、4800÷25÷4

=4800÷(25x4)

=4800÷100

=4800÷100

=48

5、2/5-(3/8-3/5)

=2/5+3/5-3/8

=1-3/8

=5/8

6、3/4-(3/7-1/4)

=3/4+1/4-3/7

=1-3/7

=4/7

7、3.2x0.125x2.5

=0.125x8x(0.4x2.5)

=1x1

=1

8、0.4×125×25×0.8

=(0.4×25)×(125×0.8)

=10×100

=1000

9、1.25×(8+10)

=1.25×8+1.25×10

=10+12.5

=22.5

10、9123-(123+8.8)

=9123-123-8.8

=9000-8.8

=8991.2

一、6÷3/8 – 3/8 ÷6

=1/6x(3/8-3/8)

=1/6x0

=0

二、4/7 ×5/9 + 3/7 × 5/9

=(4/7+3/7)x5/9

=1x5/9

=5/9

三、5/2 -（ 3/2 + 4/5 ）

=5/2-3/2-4/5

=1-4/5

=1/5

四、6 ×（ 1/2 + 2/3 ）

=6x1/2+6x2/3

=3+4

=7

五、8 × 4/5 + 8 × 11/5

=8x(4/5+11/5)

=8x3

=24

六、31 × 5/6 – 5/6

=(31-1)x5/6

=30x5/6

=25

七、4/5 × 25/16 + 2/3 × 3/4

=5/4+1/2

=5/4+2/4

=7/4

八、101 × 1/5 – 1/5 × 21

=(101-21)x1/5

=80x1/5

=16

九、解比例：

8 : x = 24 : 15 x : 0.15 = 3.6 : 910 1.2x = 45

2.4 : 135 = 12 : x 110 : x = 0.2 : 14 3.6 : 15 = x : 2212

十、简便运算：

① 4×127 +4×29 + 57 ×4 ② 567+98 ③ 213 ×12.5×67 ×8 ④ 127 - 56 - 16

⑤ 2178 ÷7 ⑥ (13 + 15 )×45 ⑦ 0.4×7+0.4×3

扩展资料：

在四则运算中，加法和减法叫做第一级运算，乘法和除法叫做第二级运算。含有两种或两种以上的运算的算式，通常称为混合运算。加、减、乘、除的混合运算也叫做四则混合运算。在四则混合运算中，规定的计算先后次序，称为运算顺序。数学上规定的四则运算顺序如下：

(1)同级运算在一个算式中，如果只含有同级运算，应当按照从左到右的次序进行运算。这就是说，只含有加减法，或者只含有乘除法的混合运算，它们的运算顺序是从左到右依次计算。

(2)一至二级运算

在一个算式中，如果既含有第一级运算又含有第二级运算，那么，应先算第二级运算，后算第一级运算。即“先算乘法和除法，后算加法和减法”，简称“先乘除，后加减”。

参考资料来源：百度百科-脱式计算

六年级数学脱式计算带过程带答案 急急急
1.6÷ 3/8 – 3/8 ÷6
=1/6x(3/8-3/8)
=1/6x0
=0
2.4/7 × 5/9 + 3/7 × 5/9
=(4/7+3/7)x5/9
=1x5/9
=5/9
3.5/2 -（ 3/2 + 4/5 ）
=5/2-3/2-4/5
=1-4/5
=1/5
4.6 ×（ 1/2 + 2/3 ）
=6x1/2+6x2/3
=3+4
=7
5.8 × 4/5 + 8 × 11/5
=8x(4/5+11/5)
=8x3
=24
6.31 × 5/6 – 5/6
=(31-1)x5/6
=30x5/6
=25
7.4/5 × 25/16 + 2/3 × 3/4
=5/4+1/2
=5/4+2/4
=7/4
8.101 × 1/5 – 1/5 × 21
=(101-21)x1/5
=80x1/5
=16

1.6÷ 3/8 – 3/8 ÷6
=1/6x(3/8-3/8)
=1/6x0
=0
2.4/7 × 5/9 + 3/7 × 5/9
=(4/7+3/7)x5/9
=1x5/9
=5/9
3.5/2 -（ 3/2 + 4/5 ）
=5/2-3/2-4/5
=1-4/5
=1/5
4.6 ×（ 1/2 + 2/3 ）
=6x1/2+6x2/3
=3+4
=7
5.8 × 4/5 + 8 × 11/5
=8x(4/5+11/5)
=8x3
=24
6.31 × 5/6 – 5/6
=(31-1)x5/6
=30x5/6
=25
7.4/5 × 25/16 + 2/3 × 3/4
=5/4+1/2
=5/4+2/4
=7/4
8.101 × 1/5 – 1/5 × 21
=(101-21)x1/5
=80x1/5
=16
点赞，谢谢

1.6÷ 3/8 – 3/8 ÷6 =1/6x(3/8-3/8) =1/6x0 =0 2.4/7 × 5/9 + 3/7 × 5/9 =(4/7+3/7)x5/9 =1x5/9 =5/9 3.5/2 -（ 3/2 + 4/5 ） =5/2-3/2-4/5 =1-4/5 =1/5 4.6 ×（ 1/2 + 2/3 ） =6x1/2+6x2/3 =3+4 =7 5.8 × 4/5 + 8 × 11/5 =8x(4/5+11/5) =8x3 =24 6.31 × 5/6 – 5/6 =(31-1)x5/6 =30x5/6 =25 7.4/5 × 25/16 + 2/3 × 3/4 =5/4+1/21.6÷ 3/8 – 3/8 ÷6 =1/6x(3/8-3/8) =1/6x0 =0 2.4/7 × 5/9 + 3/7 × 5/9 =(4/7+3/7)x5/9 =1x5/9 =5/9 3.5/2 -（ 3/2 + 4/5 ） =5/2-3/2-4/5 =1-4/5 =1/5 4.6 ×（ 1/2 + 2/3 ） =6x1/2+6x2/3 =3+4 =7 5.8 × 4/5 + 8 × 11/5 =8x(4/5+11/5) =8x3 =24 6.31 × 5/6 – 5/6 =(31-1)x5/6 =30x5/6 =25 7.4/5 × 25/16 + 2/3 × 3/4 =5/4+1/2