文档介绍：78 - 4-40=
39 + 1-8 =
14 + 8 + 30 =
98 - 20 - 9=
29+ 10+ 30=
9 + 4+ 60=
2+ 4+ 46=
9+ 36 + 8 =
3 + 39 + 0 =
23 + 2+ 30=
90 - 7-50=
6 + 37 + 6 =
19 + 3+ 8 =
90 - 4-7 =
11+ 20-9 =
5+ 16+ 70=
18+ 9+ 7 =
4 + 39 + 5 =
42 + 10 + 5=
54 - 8-20=
26 + 2 + 53 =
0+ 46+ 7
32 - 6-2 =
34 + 0 + 26 =
48 - 10+5=
4+ 26 + 39=
66 - 10-8 =
10 + 27-4 =
43 + 7-3 =
52 - 7 - 1 =
61 + 5-20 =
41 + 9+ 38=
2 + 18+ 37 =
56 - 3+20=
61 + 20+ 1 =
90 — 40 — 9 =
79 - 40+2=
0+ 62 + 0 =
16-16 + 50 =
89 - 9-2 =
25+ 10+ 30=
3 + 27+ 40 =
69 - 10+7=
10+ 14+ 6=
71 - 10+6=
85 - 2-20=
43 — 8— 0 =
100-30 - 4=
80 - 70-9 =
23+ 20-30 =
96 - 20 - 70=
15 + 9+ 3 =
54+10- 9 =
18 + 0 + 50 =
0+ 0+ 35=
80 - 5+20=
27 + 10-7 =
61 - 40 - 3=
0+ 47 + 0 =
87 - 40+8=
18 + 2+ 14=
10+ 29+ 4=
17 + 20 + 4 =
95 - 5-20=
57 - 7-40=
56+20-2 =
58 - 30 - 9=
3+ 42 + 3 =
8 + 3+ 21 =
69 - 2-7 =
8+ 43-5 =
51 + 20 + 7 =
90 - 60+22=
74 + 3+ 20=
43 - 3 - 8 =
8+ 32+ 19=
41 - 1+15=
58 - 8+4=
86 - 50 - 0=
3+ 33-6 =
18+ 10+ 7 =
8+ 35+ 10=
29+ 8+ 10=
87 - 7 - 60 =
74 + 10 + 8=
3+ 27+ 61 =
72 + 8 + 3 =
45 + 20-7 =
17+ 2+ 10=
8 + 22 + 52 =
65-8 + 30=
20+ 41-6 =
37 + 40 + 20=
38 + 6+ 9 =
72 - 20-2=
51 - 30+9=
4+ 59+ 1 =
19+ 30 + 7=
71 - 61 - 0 =
49 - 30 - 4=
2+ 63-8 =
93 - 5 - 7 =
11 + 30 + 6=
99 - 2-9 =
5 + 28+ 9 =
28 — 0- 4 =
20+ 24 + 20=
85 - 6+1 =
93 -