2÷[(1/27-1/36)×9]×6 1.25×67.875+0.125×6787.5+125×0.53375.

问题描述:

2÷[(

1
27
-
1
36
)×9]×6
1.25×67.875+0.125×6787.5+125×0.53375.

(1)2÷[(

1
27
-
1
36
)×9]×6,
=2÷[
1
27
×9-
1
36
×9]×6,
=2÷[
1
3
-
1
4
]×6,
=2÷
1
12
×6,
=2×12×6,
=144;
(2)1.25×67.875+0.125×6787.5+125×0.53375,
=125×0.67875+125×6.7875+125×0.53375,
=125×(0.67875+6.7875+0.53375),
=125×8,
=1000.