下面各题怎样算简便就怎样算:
①3.6×1.25+0.32÷0.4②455﹣12.5×4÷8.1 ③8.25×4.8+4.8×1.75
能简便的一定要简便:
①4.7+7.69+5.3+2.31②53.78﹣13.6﹣37.4+6.22③57×101﹣57
④(520+480)÷50×4⑤400﹣(1300÷65+35)⑥60﹣(21.5﹣8.8)+7.3.
脱式计算(能简便算的要简便算)
(1)89.3×43+38×89.3+893×1.9(2)10.01×101﹣10.01(3)4.75×17.5+2.5×4.75
(4)1.25×32×0.25(5)0.22×1.5+1.541÷2.3(6)(5.15﹣3.25)×0.4+0.36.
2.5×125×6.4×0.2.
400﹣213.15÷10.5;
17.46﹣7.83﹣2.17+2.54;
7.5+2.5+0.6×0.4﹣3.24;
1.23×4+4.92×7+2×4.92;
(10﹣9.5×0.48)+15.9÷0.75;
3.5×[6.8﹣(1.6+3.6÷0.9)].