直接写出得数. 1.8×0.5= 3.78÷6= 8.1÷0.9= 98÷0.1= 16.4÷4= 1.92÷0.3=1.09+9.01= 80×0.25= 1.3﹣0.7= 0.01×800= 72×3.8= 5.98÷0.28=
7.85﹣4.7+2.15﹣4.3 193.2÷6.9﹣1.9×2.5 1.25×3.2×2.5×4.9 4.97×4.97+4.97×4.03+4.97 (3.12+0.9)÷(8.5﹣5×1.1) [5+(17.9﹣1.74÷0.6)]×8.5.
计算,能简算的要简算 10÷0.2÷2.58.4÷0.21÷0.51.25×3.2×0.25 14.5×10214.64+3.7×2.83.5×0.7+7.5×0.7﹣0.7.
用递等式计算.(写出必要的计算过程,能简便的用简便方法计算) (9.4﹣5.8)×2.0712.54﹣4.56﹣3.44﹣1.54 (9.36×5+9.36+9.36×2)×1.257.236÷0.18﹣14.3×0.02.
用简便方法计算. 8﹣4.9﹣5.16.75﹣(0.9+3.75) 34+1.8+3.66+0.20.96﹣0.28+0.04﹣0.72.
选用合适的方法计算: 6.02+3.6+1.981.29+3.7+2.71+6.33.07﹣0.38﹣1.62 3.25+1.79﹣0.59+1.75 7.5+4.9﹣6.114.8+7.9﹣4.8.