0.34+0.45= 0.57+0.9= 3.8+1.2= 10-2.5-2.5=
2.4×0.01= 7.8÷100= 1.08×4= 1÷4=
10÷0.5= 0÷0.38= 0.91÷9.1= 0.25×2=
54.3+7.6×54.3+1.4×54.3 2.5×3.2×0.125 5.6×0.99
37.68-(5.68-3.76) 4.23-1.67-2.33 3.65-(1.65+0.98)
0.4×(3.2-0.8)÷1.2 5×[(3.24+4.06)÷6.05]
7.4×1.3-4.68÷0.9 [10-(0.2+16.7×0.07)]÷0.01