直接写出得数. 1.5×4= 1.6+3.04= 19.2﹣0.8= 4.5÷0.15=0.21×100= 2.8÷0.7= 0.012= 108÷2.5÷4=5.9÷0.01= 1﹣0.99=
30﹣0.06+9.92108÷(0.45÷0.9)(0.25+12.5)×45.2+9.8+2.2+4.8.
递等式计算.(能简算的要简算)19.67﹣(1.67+2)﹣1 (4﹣3.6×)÷×+×3.5×+5.5×80%+0.86.4×1.25×2.52008÷2009×2010.
脱式计算:(能简算的要简算)12.8+1.9+15.94; 7.69+(4.76﹣1.96);4.68+2.72+7.32; 25.06﹣2.65﹣8.35.
下面各题怎样算简便就怎样算88.51﹣9.06﹣0.94 132+16.4+268+23.6 3.028﹣20.44+66.972 55.27+8.236﹣5.27 64.6﹣3.46+5.4﹣6.54 64.3﹣18.75+15.7﹣11.25.
计算.(能简便的用简便法计算)4.25÷0.125÷8 2.5×(6.2﹣2.6)×0.4 76.2÷0.16﹣0.160.45与2.4的积除1.62,商是多少?