脱式计算（能简算的要简算）（12.5+7.5）÷0.25310-10×46.18÷6+

（1）（12.5+7.5）÷0.25
=20÷0.25
=80

（2）310-10×4
=310-40
=270

（3）6.18÷6+4
=1.03+4
=5.03

（4）2÷

8

5

×

25

4

=2×

5

8

×

25

4

=

125

16

（5）13.1×56+5.6×69
=131×5.6+5.6×69
=（131+69）×5.6
=200×5.6
=1120

（6）2÷

2

3

-

2

3

÷2
=2×

3

2

-

2

3

×

1

2

=3-

1

3

=2

2

3

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