7.2×100.72 X 100 0.3+100.3+0.1
1.26+0.71.26×0.7 1.6+0.251.6×4
12=+
0÷0.45= 12.9÷0.3= 1.3÷0.13= 3÷10=
3.98÷0.1= 3.6÷0.4= 2.4×5= 0.4÷2=