Subtract Fractions & Decimals Quick Check

Answer 1

1) To subtract fractions:
- Find a common denominator for the fractions.
- Convert both fractions to have the same denominator.
- Subtract the numerators and keep the denominator the same.
- Simplify the resulting fraction if necessary.

Example:
1/3 - 1/4

To find a common denominator, we can use the least common multiple (LCM) of 3 and 4, which is 12.

1/3 = 4/12 (multiplying numerator and denominator by 4)
1/4 = 3/12 (multiplying numerator and denominator by 3)

Now we can subtract the fractions:
4/12 - 3/12 = (4 - 3)/12 = 1/12

2) To subtract decimals:
- Write the decimals as whole numbers by moving the decimal point to the right until there are no more decimal places.
- Subtract the whole numbers.
- Move the decimal point back to the original position.

Example:
2.5 - 1.3

Moving the decimal point to the right, we get:
2.5 = 25
1.3 = 13

Now we can subtract the whole numbers:
25 - 13 = 12

Finally, we move the decimal point back:
12 = 1.2