0.7890.8 4.364.360 1.011.10 0.770.707
5.6×1.356×0.13 1.06×1.061.06
614×26= 509×38= 308×70=
260×14= 60×290= 71×211=
5.6+3.2= 13.6+2= 4.7-2.8= 6-2.4=
4.2×100= 8.3÷10= 25×40= 18-9×0=