文档介绍:130 —27 =
7X800 =
56+8 =
146 —23 =
24+3 =
500 X2 =
700 X4 =
546 - 457 =
40 X7 =
72 +8 =
1800 -800 =
33 + 57 = =
52-28 =
90-26 =
53+36 =
47+54 =
87-35 =
30 X7 =
13 X3 =
7500 - 500 =
0X57 =
100-55 =
74+28 =
97-59 =
300 X8 =
600 X4 =
1200-800 =
900-500 =
25 X4 =
15=
56 +8+4 =
800 X5 =
600 X7 =
0-91 =
120 X4 =
94-19 =
72-48 =
64-16 =
33-25 =
82 r =
64 +8 =
73+69 =
56+27 =
750+150 =
800-140 =
4X0 =
120 X3 =
12 X4 =
0X97 =
2X440 =
29+4 =
49 + 33 =
11 X4 =
230 X3 =
56 +7 =
54+28 =
72-16 =
45 +9 =
720 +9 =
640 +8 =
88 +8 =
42 X3 =
37 + 56 =
50 X7 =
7X800 =
3X33 =
69+8 =
78 - 36 =
30+3 =
310 X3 =
33-25 =
82 M =
64 +8 =
73+69 =
48 + 28 =
800 +8 =
54 + 28 =
40+6 =
60-15 =
17 + 27 =
430 X2 =
46 +8 =
9 X400 =
700 +7 =
230 X3=
11 X4 =
86-49 =
67+23 =
52-28 =
90-26 =
4700 -700 =
480 +8 =
9 X500 =
1700 -800 =
32 X3 =
0X37 =
7 X700 =
70 + 500 =
3X330 =
23 X3 =
310 X3 =
82 - 55 =
300 X8 =
600 X4 =
1200-800 =
900-500 =
300 +3 =
7X50 =
80 + 17 =
20 +3 =
70 X7 =
53-14 =
1200 -700 =
28 X1 =
46 + 24 =
10 X50 =
52 + 39 =
25 X2 =
125 X8 =
120 -25 =
125 -26 =
896 - 546 =
155 X5 =
45 X1O =
56 X2 =
25 X7 =
42 X2 =
65 + 15 =
87-38 =
20 X13 =
0 +73 =
350 +5 =
400 +8 =
25 X4 =
123 +25 =
248 +89 =
456 +45 =
8+16 =
9 + 18 =
45 - 23 =
78 —23 =
26 +9=
660 +3 =
50 +5 =