50% 
50% 

2+2=4 
2+2=4 

40% 
40% 

5-1=4 
5-1=4 

30% 
30% 

10+37=47 
10+37=47 

20%=1/5*100% 
20%=1/5*100% 

8-3=5 
8-3=5 

10%=1/10 
10%=1/10 

5x-6y=x+7 
5x-6y=x+7 

100% 
100% 

8+2=10 
8+2=10 

60% 
60% 

98+4=102 
98+4=102 

90% 
90% 

15+21=36 
15+21=36 

70% 
70% 

9-11=-2 
9-11=-2 

80% 
80% 

80+23=103 
80+23=103 

2% 
2% 

7-5=2 
7-5=2 

6% 
6% 

95+28=123 
95+28=123 

78% 
78% 

84-5=79 
84-5=79 

15% 
15% 

15-21=-6 
15-21=-6 

98% 
98% 

76+67=143 
76+67=143 

12% 
12% 

24-21=3 
24-21=3 

46% 
46% 

89+76=165 
89+76=165 

0,01% 
0,01% 

19+28=47 
19+28=47 

38% 
38% 

12-5=7 
12-5=7 

63% 
63% 

37+46=83 
37+46=83 

27% 
27% 

54-31=23 
54-31=23 

13% 
13% 

12+98=110 
12+98=110 

86% 
86% 

98-12=86 
98-12=86 

54% 

25+38=63 

97% 


48-76=-28 

45% 

123+456=579 

19% 

45-19=26 

23% 

1234+5678=6912 

58% 

9876+5432=15308 

21% 

6543-2345=4198 

87% 

9021-4376=4645 

45% 

3579+1357=4936 

82% 

901-283=618 

74% 

45-36=-9 

65% 

24+81=105 

16% 

250-136=114 

479+25=504 