simplfying
adding
subtracting
MULTPLYING
RANDOM
100
12-15
4-5
100
2-5 ¿1-7
19-35
100
3-4-3-10
18-40
100
12-10 X 2-3
24-30
100
61-10
6 1-10
200
15-24
5-8
200
4-7¿1-6
31-42
200
1-3-1-8
5-24
200
12- X 1-2
12-24
200
37-12
3 1-12
300
28-49
4-7
300
3-4¿7-10
58-40
300
7-10-2-5
3-10
300
9-9 X 2-4
18-36
300
25-6
4 1-6
400
54-18
3
400
5-6¿7-12
17-12
400
7-8-3-10
46-80
400
8-9 X 4-4
32-36
400
7-2
3 1-2
500
18-20
9-10
500
3-4¿4-7
37-28
500
8-9-3-4
5-36
500
10-10 X 3-4
30-40
500
81-8
10 1-8
M
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