These would just be absolutely Broken.
Calculator would make A Double-Edge do 240 Base, not even calculating STAB.
Momentum would need to be a fixed percentage of speed becoming the bonus to base damage, and then tier the bonus.
Diamond Shield would Give Avalugg 920 BASE DEF.... if they gave it to Avalugg. Maybe 2x or at most 3x multiplier would be viable.
I think the first one (Calculator) was referring to moves like Sonicboom and Dragon Rage which always do a set amount of damage.
But if not... then yeah, it's broken as hell.