Decimal Operations

Notes on:

Adding / subtracting decimals -
Line up the decimal point and add or subtract as normal

Multiplying decimals -
add the number of spaces the decimal point is from the right in each number being multiplied. Move the decimal point in the answer this amount from the right.

Ex. 1.1 x 1.1 = 1.21 (the answer's decimal point is two spots from the right)

Ex. 0.91 x 0.2 = 0.182 (the answer's decimal point is three spots from the right (2 +1))

Dividing decimals - make the divisor a whole number by moving the decimal point right. Move the decimal point the same amount right in the dividend. Divide as normal from this point.

Helpful reminder:
Add and Subtract keep it intact
Multiply and divide let it slide.