9.9×6.970 10.7210.72÷3.2
6.34÷0.16.34×0.1 3.36÷0.1233.6÷1.2
0.2×0.3= 4.9÷7= 2.5×4=
2.4÷0.2= 2.8×100= 0.8÷0.4=
0.1×60= 5÷0.01= 3.89×0+3.89=