6+3.4= 5-0.7= 0.5÷100= 0.35+0.65=
2.76+0.4= 0.5×2.4= 6.12-0.6= 10×0.45=
0.4×0.05= 4÷0.5= 4.7+5.5= 0.1-0.01=