计算下面各题(能简算的要简算)10﹣(3.14+1) 7.25+3+ 4++19.05+5﹣1 10.9﹣1.6﹣3 10+(1.625+1﹣)
用简便方法计算 .
简算2.25×+1.75×+0.6 2.5×(1.9+1.9+1.9+1.9)
简算4.5×25%+1.3×+2.2×0.25 5.02﹣1.37﹣2.63 ×40﹣÷.
简算:3.61÷+6.39× 0.25×32×0.15 8×+8×+8 3﹣2+5﹣1.
怎样简便怎样算.105×(+) (2.76+3.06÷)×2.2 2.5×4.3+2.5×4.7+2.5 (﹣25%+)÷×.