一个数的5倍再除以6,商5余5,这个数是 .
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?
1.25×32 0.56+3.48+0.44+6.52 2.8×(2.25+28.5÷1.5)5.8×7.6+7.6×4.2 145.3﹣58.6﹣41.4 [(5.1﹣3.6)÷0.8﹣1]×0.09.