数的世界(2) 1.0.99 0.035 9 6.62 0.16 0.07 5.28 60 2. 0.87×5.2=4.524 10.66÷5.2=2.05 100-2.375=97.625 3. 原式=3.2×(5.7+4.3) 原式=25×0.4×6.08 =3.2×10 =10×6.08 =32 =60.8 原式=5.17-(0.8+1.2) 原式=1.56-0.56+0.81 =5.17-2 =1+0.81 =3.17 =1.81 原式=3.75÷(0.5÷5) 原式=4.5×0.7+4.5×0.3 =3.75÷0.1 =4.5×(0.7+0.3) =37.5 |