计算.300÷60= 350÷50= 265÷30= 572÷80= 565÷70= 273÷90=
5.5×2= 9.6÷4.8 =3﹣1.5×2= 2×3.1=2.4×0.5= 0.125×8﹣0.1= 0.48÷6= 6.4﹣4=0.6÷3+3= 0.91÷13= 3.25+0.75= 9.9﹣0.9÷0.1=2.5×3= 4.4÷(5×0.2)= 7×1.3= 0.96÷0.06=0.36×0.3= 0.35÷0.7= 4×0.8×0.25×1.25= 13+0.7÷0.7=
直接写得数.5.1﹣2= 7.2÷1.2= 3.86×10= 3.9×0.01=9.1÷0.13= 9.73÷10 2.5×4= 0.5+0.43=1﹣0.55= 0.4×0.3= 98.4÷100=
列竖式计算 0.8﹣0.27 5.89+24.7 3.24÷1.1(得数保留两位小数) 6.9×4.52(得数精确到十分位)
直接写得数.0.7+0.8= 10﹣0.98= 0.5×2= 28÷0.25÷0.4=15.7+3.4=.65﹣6.5= 8÷0.5= 0.5×37.7×2= 3.7×0.5×4=0.36÷4= 0.15×0.6= (5+0.02﹣5.02)×1.9=
8.99+0.1=1﹣=5﹣5÷2.5=0、5×2.4=0.1÷0.01=0.43×(2.7+7.3)=1.206×0.8≈(得数用四舍五入法凑整到百分位)2998÷31≈(估算)