问题
解答题
用你喜欢的方法计算.
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答案
①125×(8+0.8),
=125×8+125×0.8,
=1000+100,
=1100;
②8.72-3.54-2.46,
=8.72-(3.54+2.46),
=8.72-6,
=2.72;
③2.5×0.64×4,
=2.5×4×0.64,
=10×0.64,
=6.4;
④350-0.6×50,
=350-30,
=320;
⑤72×102-2×72,
=72×(102-2),
=72×100,
=7200;
⑥100.2-5+9.8,
=100.2+9.8-5,
=110-5,
=105.