23 – 56 =

69 – 74 =

47 – 52 =

76 – 99 =

109 -156 =

72 – 85 =

89 – 81 =

12 – 26 =

102 – 123 =

166 – 198 =

76 – 89 =

169 – 188 =

99 – 176 =

124 – 140 =

103 – 145 =

89 – 96 =

124 – 140 =

145 – 169 =

77 – 85 =

88 – 96 =

172 – 183 =

98 – 145 =

45 – 76 =

111 – 150 =

156 – 178 =