109-pages of handwritten reference guide for common math algorithms:rounding, scientific notation, decimals and fractions on grids, multiplying and dividing decimals, long division, adding and subtracting fractions, converting fractions to decimals, converting mixed numbers to improper fractions, converting improper fractions to mixed numbers, multiplying and dividing fractions, measurement conversion, PEMDAS, percent, surface area, formulas, area, perimeter, frequency charts, box plots, MAD, ab