Fractions and Decimals

Line up the decimal points when....

Ignore or get rid of decimal points when first ....

We can change to a mixed fraction when the numerator is smaller than the denominator.

If diving by a decimal number we must multiply both numbers by 10, 100, etc till the divider becomes a whole number.

In fractions we need a common denominator when

We can change to a mixed fraction when the numerator is bigger than the denominator.

In fractions we don’t need a common denominator while

In decimals we don’t need to line up decimals when

We can get rid of the decimal points when multiplying and put them back later.

When dividing fractions we must first change mixed fraction to improper fractions