A Major Scale

A Major,  B Major,  C Major,  D Major,  E Major,  F Major,  G Major
Minor Scales

Key Signature

A Major key signature

Notes in the A Major Scale

A B C# D E F# G# A

The A Major scale has three sharps 

C#  F#  G#

The A Major scale shown on a keyboard

One position for the A Major scale on the Ukulele for both high and low G strings

A Major scale on the Ukulele