用你喜欢的方法计算.0.125×32×2.56.7×0.9+
用你喜欢的方法计算.0.125×32×2.56.7×0.9+3.3×0.9(23-12+16)÷12418.7×98+18.7+18.70.65×14+87×65%-13...
用你喜欢的方法计算.0.125×32×2.56.7×0.9+3.3×0.9(23-12+16)÷12418.7×98+18.7+18.70.65×14+87×65%-1320.
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(1)0.125×32×2.5,
=0.125×8×4×2.5,
=(0.125×8)×(4×2.5),
=1×10,
=10;
(2)6.7×0.9+3.3×0.9,
=(6.7+3.3)×0.9,
=10×0.9,
=9;
(3)(
-
+
)÷
,
=(
-
+
)×24,
=
×24-
×24+
×24,
=16-12+4,
=4+4,
=8;
(4)18.7×98+18.7+18.7,
=18.7×98+18.7×2,
=(98+2)×18.7,
=100×18.7,
=1870;
(5)0.65×14+87×65%-
,
=0.65×14+87×0.65-0.65,
=0.65×(14+87-1),
=0.65×100,
=65.
=0.125×8×4×2.5,
=(0.125×8)×(4×2.5),
=1×10,
=10;
(2)6.7×0.9+3.3×0.9,
=(6.7+3.3)×0.9,
=10×0.9,
=9;
(3)(
2 |
3 |
1 |
2 |
1 |
6 |
1 |
24 |
=(
2 |
3 |
1 |
2 |
1 |
6 |
=
2 |
3 |
1 |
2 |
1 |
6 |
=16-12+4,
=4+4,
=8;
(4)18.7×98+18.7+18.7,
=18.7×98+18.7×2,
=(98+2)×18.7,
=100×18.7,
=1870;
(5)0.65×14+87×65%-
13 |
20 |
=0.65×14+87×0.65-0.65,
=0.65×(14+87-1),
=0.65×100,
=65.
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