直接写出得数:256+198= 0.8+0.72= 10.2﹣5.4﹣4.6= 100÷25×4=720﹣299= 10﹣4.35= 25×37×4= 18×3÷18×3=250×6= 4.68÷100= 101×88﹣88= 7.8+0.2﹣7.8+0.2=480÷16= 1.8×1000= 246﹣46×0= 25+75÷75+25=
计算:(能简便的要简便计算) ①2526﹣36×42÷27 ②17.09﹣3.63﹣6.37 ③1×(﹣) ④5.6×3﹣×(9﹣2.5) ⑤0.25÷(+0.2)﹣.
怎样算简便就怎样算: 2008×;72.5+12.5+12.5÷; [(+1)×﹣0.25]÷;
下面各题怎样简便就怎样计算. 3.2×2.5×12.50.25÷(+0.2)﹣7÷〔×(+)〕 5.7×0.25+6.8×25%﹣8.5×.
下面各题怎样简便就怎样算 14.4÷0.125÷8(+)×24×2.34×56﹣23.4×5.6 1.5×+0.8×5.5+2×1005÷[42×(﹣)]÷[1﹣(+)].
下面各题怎样简便就怎样算(求未知数x) 9÷[3.2×(1﹣)+3]:2x=1:229×+×114 999+99+90.625×7.3×1﹣1+3.7﹣21+2+3+4+5+6 (﹣+)÷.