20-12.5= (53.8+46.2)×0= 88-28÷4=
2.5÷100= 7×6÷7×6= 0.28+0.54=
0.125×8= 6.5-4= 0.66元+0.36元= 180°-65°=
1.2×0.4= 5×0.8= 0.99×7.6×0= 0.09×1=
4.3+0.64=
2.5×8=
0.08×0.3=
8×4×1.25=
3-0.66=
0.07+1.3=
0.35×300=
6.7-6.7×0=
①57.6﹣18.15+32.4﹣11.85
②78×25+1764÷49
③2.5×32×12.5
④3.6×[(37.5+18.5)÷2.8]
⑤÷[(﹣)×]
⑥199×99+178+21