+ =
0.25+0.75=
4505÷5= 24.3-8.87-0.13=
①
②
③
④
⑤
⑥
0.77+0.3= 0.35+99×0.35= 10÷10%= 3.2÷0.08=
2.5×0.98×4= 0.8× ÷ = ×6÷ ×6= 5–4÷ =
+ ÷ + = 2×( + )×4=
0.5÷5%= 0.75× = 2+3%= 3a×4a=
6÷ = ×10% = 1÷100%÷25= 15÷1%=
1.05- = ÷ = ( - )× = × ÷ × =
1-0.74= = 0.01÷0.4= 8÷1.5÷2=
0.23= 7÷7%= = =