1.25×0.4= 1×3.12-0.8= 5.4×0.2-0.9= 1.25×0.4=
3.64/1.25/0.32简算 =3.64/(1.25*8)/0.4 =3.64/(1.25*80/0.4 =364/
25*0.32*1.25 =25*0.4*1.25*0.8 请问简便方法这样对吗
用简便方法算1.25×(0.8+0.4)=? 4.89×99+4.89= ?
0.1+0.1+0.3+0.4+.+0.8+0.9+1=?简算
56×1.25=?3.4×7×1.5=?0.8×0.25×0.4×12.5=?递等式计算、要简便哦!有奖金!
简算1.25×4.34×0.8=?
口算. 0.9×7= 0.6+7= 1.25×8= 7.2×0.1= 2.5×0.4= 3.35×1000= 1.2÷4
0.8*25*1.25*0.4(简算)
解方程 x/1.25=0.8:2.9 x-0.5x+9/20=0.9
0.2*0.07+0.4*0.6+0.5*0.9+0.18+0.3=1添括号
-0.4x+0.9/0.5=0.2x+0.3/0.3+1d等于几
判断题:0.8+0.8+0.8+0.4+0.4=0.8*4=0.4*8