文档介绍：100－63＝ ×500＝ ÷15＝ 25×12＝
135÷＝ ＝ ×＋＋＝ ＝
3/4 + 1/4 = 4× ＝ ×＝ 10－＝
2 + 4/9 = ＝14－＝ ＋÷20＝3 - 2/3 = ×＝ 200＝ ×99＝÷3/4 - 1/2= 420÷×500＝ ＝ 35＝ － + 1/2 -1/6 = 12＝ ÷ 15＝ 25×＋＝-(+)= ＝10－ ÷＝ ×＝
7/8 + 3/8 = 20＝ 3/4 + 1/4 = ＝ 4×4÷3/10 +1/5 = 2 + 4/9 = ×＝ ＋＝
4/5 - 7/10 = 2 - －＝＝ 3 - 2/3 = × -1/3 = 420÷÷15＝ ＝ 3/4 - 1/2=
÷17＝1/6 + 1/2 -1/6 = ＝× 25×12＝
＋-(+)= ＝4× 135÷＝ ＝
÷＋＝ ＝7/8 + 3/8 = 3/4 + 1/4 =
× +1/5 = ×99＝ ＝ 2 + 4/9 =
× 35420÷＝4/5 - 7/10 = ＝ 3 - 2/3 =
1÷3/4 - 1/2= 25×12＝5＝ 2 - 1/6 -1/3 =
6÷÷ 1712＝ ＝1/6 + 1/2 -1/6 = 135÷＝ + 1/4 = －＝＋19＝ -(+)=
17× 40＝ 2 + 4/9 = 7/8 + 3/8 = ÷＝100－63 3/10 +1/5 = 3 - 2/3 = ＝ ×＝ - 1/2= ×＝＋ 4/5 - 7/10 = ＝
× ＝1÷5 ＝1/6 + 1/2 -1/6 = 2 - 1/6 -1/3 =
14－＝126÷＝ ＝ ÷-(+)=
÷＋＝ ＝7/8 + 3/8 = －＝×17×3/10 +1/5 = ÷＝40500＝ ＝
＝63 ＋ ×4/5 - 7/10 = ＝ ＝ －10010＋ ＝× 2 - 1/6 -1/3 = －＝＝
4÷× 51÷＝ ＝÷ ＝ ＝
×＝－ ＝6÷12 ＝＋ 200＝
＝ ＝－－＝÷ ＝ ÷0.