85个127连加,和是多少?
下面各题怎样简便就怎样计算 (1)12.64﹣(3.96+4.64) (2)36.26﹣4.78+3.74 (3)7.34+7.57+12.66+6.43 (4)78.65﹣23.12﹣14.88.
下面各题,能简便算的要简便 (100+8)×0.1254.8×102 5.8×8.5+5.8×0.5+5.8(1.5+4.6)×(4.6﹣1.5)
混合运算(能简便的一定要简便)(18%) 4.58+3.38+(5.48+6.62) 0.25×32×0.125 73.75﹣(4.3+8.75) 4.2×0.75+0.75×5.8 0.98×99+0.98 6.38÷0.05÷20.
简便计算: 1×2.5×4; 2.3×18+2×2.3.
神机妙算细又巧! 14.64+3.7×2.8 72.5×0.4﹣81.2÷56 13.8×0.45+138×0.055 (1.5÷4)÷(0.15÷4) (1.25+1.25+1.25+1.25)×0.8×0.25.