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简便计算.(采用开放式)
8.25    54.34     0.54      54.2
从上面这些数中选择合适的数,填在下式子的括号中,使算式能简便计算,并进行简便计算.
______×1.75+______×0.54
 154.34-______+45.8.
人气:310 ℃ 时间:2020-02-03 18:35:07
解答
(1)0.54×1.75+8.25×0.54,
=0.54×(1.75+8.25),
=0.54×10,
=5.4;
(2)154.34-54.34+45.8,
=(154.34-54.34)+45.8,
=100+45.8,
=145.8;
故答案为:0.54,8.25,54.34.
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