
用你喜欢的方法计算.(1)128+750÷25×18 (2)9.4×14+0.25×35 (3)(34-110÷2)×
用你喜欢的方法计算.(1)128+750÷25×18(2)9.4×14+0.25×35(3)(34-110÷2)×514....
用你喜欢的方法计算.(1)128+750÷25×18 (2)9.4×14+0.25×35 (3)(34-110÷2)×514.
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(1)128+750÷25×18,
=128+30×18,
=128+540,
=668;
(2)9.4×
+0.25×
=9.4×0.25+0.25×0.6,
=(9.4+0.6)×2.5,
=10×2.5,
=25;
(3)(
-
÷2)×
,
=(
-
)×
,
=(
?
)×
,
=
×
,
=
.
=128+30×18,
=128+540,
=668;
(2)9.4×
1 |
4 |
3 |
5 |
=9.4×0.25+0.25×0.6,
=(9.4+0.6)×2.5,
=10×2.5,
=25;
(3)(
3 |
4 |
1 |
10 |
5 |
14 |
=(
3 |
4 |
1 |
20 |
5 |
14 |
=(
15 |
20 |
1 |
20 |
5 |
14 |
=
14 |
20 |
5 |
14 |
=
1 |
4 |
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