问题
解答题
合理、灵活地计算下列各题. ①34.8÷1.25÷8 ②1.25×3.2×0.25 ③36×25%+0.25×43+
④(2.7+12.5)÷0.5-5.6. |
答案
①34.8÷1.25÷8,
=34.8÷(1.25×8),
=34.8÷10,
=3.48;
②1.25×3.2×0.25,
=(1.25×8)×(0.4×0.25),
=10×0.1,
=1;
③36×25%+0.25×43+
,1 4
=36×0.25+0.25+43+0.25,
=(36+43+1)×0.25,
=80×0.25,
=20;
④(2.7+12.5)÷0.5-5.6,
=15.2÷0.5-5.6,
=30.4-5.6,
=24.8.