Beginner Quiz Course (add, 1-digit)

Beginner Quiz Course (subtract, 1-digit)

Beginner Quiz Course (multiply, 1-digit)

Beginner Quiz Course (divide , 1-digit)

Intermediate level Quiz Course (add, 2-digit)

Intermediate level Quiz Course (subtract, 2-digit)

Intermediate level Quiz Course (multiply, 2-digit)

Intermediate level Quiz Course (divide, 2-digit)

Advanced level Quiz Course (add, 3-digit)

Advanced level Quiz Course (subtract, 3-digit)

Advanced level Quiz Course (multiply, 3-digit)

Advanced level Quiz Course (divide, 3-digit)

Most difficult quiz course