0.8×0.6= 0.9+99×0.9= 1÷2325 = 58 ×415 = 9÷37 =
7.2÷8×4= 3.25×4= 3.3-0.7= 13 +25 = 2-711 =
14 ∶12=X∶25 1.250.25 =X1.6 5 X+3.25×4=17
636+203= 568-198= 0.6×1.5 = 0.875×24 =
2.2+1.08= 10÷0.1=
0.77+0.33= 16×2.5= 7÷1.4= 9+29 = 1-0.09= 32÷53×0 =
23 ÷7= 2.6-1.7 = 42÷60%= 82= 112= 13 ÷2÷13 =