a lot
No, thank you. I do not want you to show me.
Mega- = million, giga- = billion
Some words that start with "mega" and refer to something large are megaphone, megaton, and megalith.
No; since you refer to a math score (and not a math grade), it is ratio data.
mega
math of course
It may refer to the identity matrix.
It may refer to distance from a point of reference.
The list of the what-if Megaranger Gokaiger keys are: Mega Green Mega Purple Mega Orange Mega Crimson Mega Navy Mega White Mega Gold Mega Teal Mega Brown Mega Indigo Mega Saffron Mega Amethyst Mega Vermilion Mega Chartreuse Mega Magenta Mega Viridian Mega Burgundy Mega Powder Blue Mega Scarlet Mega Cyan Mega Azure Mega Lavender Mega Gray Mega Beige Mega Cerulean Mega Slate Mega Cobalt Mega Gunmetal Mega Copper Mega Bronze Mega Khaki Mega Citrine Mega Maroon Mega Olive Mega Peach Mega Cream Mega Sangria Mega Plum Mega Emerald Mega Cerise Mega Mauve Mega Moccasin Mega Aquamarine Mega Pearl Mega Turquoise Mega Platinum Mega Tan Mega Bittersweet Mega Periwinkle Mega Sapphire Mega Fuchsia Mega Dark Green Mega Mahogany Mega Sea Green Mega Claret Mega Lime Mega Amber Mega Ecru Mega Taupe Mega Tawny Mega Lilac Mega Ochre Mega Sepia Mega Celadon Mega Orchid Mega Ash Gray Mega Steel Blue Mega Sky Blue Mega Burnt Orange Mega Brick Red Mega Caramel Mega Marigold Mega Burnt Sienna Mega Verdigris Mega Indochine Mega Carmine Mega Linen Mega Dark Gray Mega Harlequin Green Mega Amaranth Mega Ebony Mega Ivory Mega Thistle Mega Cadet Blue Mega Brass Mega Ruby Mega Mint Mega Forest Green Mega Aubergine Mega Hazel Mega Topaz Mega Bisque Mega Spring Green Mega Rainbow etc.
Factors refer to whole numbers, not decimals.
The answer may depend on which nation you refer to.
Depending on wich context: Ex : Mg (mega gram) Ml (mega meter) Refer to 1000000 times gram or meter or Ex :12M mean 12 "moles per litre" which is a scientific concentration mesurement.