28.7÷14=
2.52÷3.5=
☆7.28÷1.3=
15.6÷24= 20.64÷3.2= ※3.09÷1.5=
0.89﹣0.25= 1﹣0.98= 8.8﹣6.7= 5×400=
3.04+7.6= 1.23÷3= 0.4×0.06= 0÷1.89=
6.19×3.5 61.9×0.35
26.5×1.3 26.5÷1.3
①250-250÷25×2
②18÷ ×
③5.2÷0.4÷2.5
④(34- )÷17
⑤4.3×1.75-1.75+ ×6.7
⑥ ×[(72.8-69.6)÷ ]