## Task 3

Draw a line segment that is $4 \mathrm{~cm}$ long!

Then draw a line segment that is $9 \mathrm{~cm}$ long!

By how many centimeters is the first line segment shorter than the second? Write the equation!
$9-4=5$ or $4+5=9$ or $4+x=9 ; x=5$

### 10.9.2 2nd Round 1973, Class 1