题目内容
简便运算.
(1)0.54×40.5-0.44×40.5=______
(2)1.4×2.5×40=______.
(1)0.54×40.5-0.44×40.5=______
(2)1.4×2.5×40=______.
(1)0.54×40.5-0.44×40.5,
=(0.54-0.44)×40.5,
=0.1×40.5,
=4.05;
(2)1.4×2.5×40,
=1.4×(2.5×40),
=1.4×100,
=140.
故答案为:4.05,140.
=(0.54-0.44)×40.5,
=0.1×40.5,
=4.05;
(2)1.4×2.5×40,
=1.4×(2.5×40),
=1.4×100,
=140.
故答案为:4.05,140.
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