PART 9: Drill, errors, battery

Part 9 covers drill, errors and battery. The calculator can train you in mental arithmetic. It then explains what the error codes mean, how large numbers can be, how to replace the battery, and the specifications.

▶ Watch this step in the video (1:59:37)

MODE 8 – DRILL mode

DRILL mode: press MODE, 8. Here the calculator asks the questions: arithmetic in Math Drill, and the multiplication table in Times Table.

Two drills

Answering

An example: Math Drill

An example: the multiplication table

The questions of Math Drill

Errors and ranges

This section covers errors and calculation ranges. After an error, the left or right arrow places the cursor where it happened, so you can correct the expression. ON/C, or 2nd F then CA, clears it.