Math
Decimals:
Adding and subtracting decimals, Line up the decimals.
Multiplying decimals: do the math and then count the digits behind all decimals.
Fractions:
Adding and subtracting fractions, need a common denominator. Reduce
Multiplying: Multiply across. (Cross cancel if able) Reduce
Dividing: change divide sign to a multiplication, and invert the second number, then multiply across. (Cross cancel if able).
Reduce.