计算(1)[(0.05+14)÷0.25?40%]×18(2)[412?(0.5+13)÷527]×0.125(3)6.4×1.3+1÷1013+1310×135(
计算(1)[(0.05+14)÷0.25?40%]×18(2)[412?(0.5+13)÷527]×0.125(3)6.4×1.3+1÷1013+1310×135(4)7...
计算(1)[(0.05+14)÷0.25?40%]×18(2)[412?(0.5+13)÷527]×0.125(3)6.4×1.3+1÷1013+1310×135(4)7.4×54+125%×2.5+54÷10.
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(1)[(0.05+
)÷0.25?40%]×
=[(0.05+0.25)÷0.25-40%]×
,
=[0.3÷0.25-40%]×
,
=[1.2-0.4]×
,
=0.8×
,
=0.1;
(2)[4
?(0.5+
)÷
]×0.125
=[4
-(
+
)×
]×0.125,
=[4
-
×
]×0.125,
=[4
-4
]×0.125,
=0×0.125,
=0;
(3)6.4×1.3+1÷
+
×
=6.4×1.3+1×1.3+1.3×2.6,
=(6.4+1+2.6)×1.3,
=10×1.3,
=13;
(4)7.4×
+125%×2.5+
÷10
=7.4×1.25+1.25×2.5+1.25×0.1,
=(7.4+2.5+0.1)×1.25,
=10×1.25,
=12.5.
1 |
4 |
1 |
8 |
=[(0.05+0.25)÷0.25-40%]×
1 |
8 |
=[0.3÷0.25-40%]×
1 |
8 |
=[1.2-0.4]×
1 |
8 |
=0.8×
1 |
8 |
=0.1;
(2)[4
1 |
2 |
1 |
3 |
5 |
27 |
=[4
1 |
2 |
1 |
2 |
1 |
3 |
27 |
5 |
=[4
1 |
2 |
5 |
6 |
27 |
5 |
=[4
1 |
2 |
1 |
2 |
=0×0.125,
=0;
(3)6.4×1.3+1÷
10 |
13 |
13 |
10 |
13 |
5 |
=6.4×1.3+1×1.3+1.3×2.6,
=(6.4+1+2.6)×1.3,
=10×1.3,
=13;
(4)7.4×
5 |
4 |
5 |
4 |
=7.4×1.25+1.25×2.5+1.25×0.1,
=(7.4+2.5+0.1)×1.25,
=10×1.25,
=12.5.
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