Write the number that is 50 less than 185?

185

-50

---

135

=== The answer!!!!

NB

1. Starting with the right hand column, we say 'five take away northing, leaves five. So five in the answer'.

2. We move to the next column to the left. we say ' eight take away five, leaves three. So 'three in the answer'.

3. We move to the next column to the left, again. we say ' one take away nothing , leaves one . So 'one in the answer'.

So overall the answer is '135'.