Super simple Bash script for math drills, first grade math level. Addition only, can easily change in script.

#!/usr/bin/env bash
clear
voice="say -v Princess"
while true
do
clear
a=`jot -r 1  1 10`
b=`jot -r 1  1 10`
echo "$a + $b = WHAT?"
$voice $a plus $b equals WHAT
READ
c=$(expr $a + $b)
echo $c
$voice $c
READ
done