### A good answer might be:

In the decimal fraction 12.6 what power of 10 is associated with:

- The digit 1? 101
- The digit 2? 100
- The digit 6? 10-1

# Positional Notation

This is just base 10 positional notation which you know about already. The decimal point is put between the 100 position and the 10-1 position. Here is a longer example:

    3 5 7  .  2 8 4

    3×102+ 5×101+ 7×100+  . 2×10-1+ 8×10-2+ 4×10-3

### QUESTION 3:

Express `3/10 + 1/100` using positional notation.