题目内容
脱式计算.(能简算的要简算)
(1)1.08×0.8÷0.27
(2)102×0.45
(3)22.78÷1.25÷0.8
(4)0.34×101-0.34.
(1)1.08×0.8÷0.27
(2)102×0.45
(3)22.78÷1.25÷0.8
(4)0.34×101-0.34.
(1)1.08×0.8÷0.27
=1.08÷0.27×0.8,
=4×0.8,
=3.2;
(2)102×0.45
=(100+2)×0.45,
=100×0.45+2×0.45,
=45+0.9,
=45.9;
(3)22.78÷1.25÷0.8
=22.78÷(1.25×0.8),
=22.78÷1,
=22.78;
(4)0.34×101-0.34
=(101-1)×0.34,
=100×0.34,
=34.
=1.08÷0.27×0.8,
=4×0.8,
=3.2;
(2)102×0.45
=(100+2)×0.45,
=100×0.45+2×0.45,
=45+0.9,
=45.9;
(3)22.78÷1.25÷0.8
=22.78÷(1.25×0.8),
=22.78÷1,
=22.78;
(4)0.34×101-0.34
=(101-1)×0.34,
=100×0.34,
=34.
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