Question

100+12+12+12+12+12+12=​

Answer 1

172

Explanation:

The simple way to do this, would be to note that there are six pairs of twelve

this means that in those six pairs there are 72 ones

so what is 100+72?

172

If you wanted to check, you could do

100+12

112+12

124+12

136+12

148+12

160+12

172

Answer 2

172

Explanation:

100+12+12+12+12+12+12=​

= 100 + 6(12)

= 172