7.65+0.87.65 10.23×0.9910.23 4.58÷2.34.58
9.8×59.8÷0.2 b×0.1b+0.1(b≠0) 0.25×0.92.5
5.45-4.4= 15×6= 69÷100= 0.55+0.45-0.65=
0.25×1000= 125×8= 90×120= 1.89+8.11=