Add and subtract decimals or fractions

Key Notes :

  • Use a common denominator to add or subtract fractions.

Learn with an example

💣 Add.

Simplify your answer and write it as a proper fraction or as a whole or mixed number.

5/6 + 1/2 =

  • You can use 6 as the common denominator.
    Multiply the numerator and the denominator of 1/2 by 3 to find an equivalent fraction.
  • 1 × 3/2 × 3 =3/6
  • Now add the fractions. Add the numerators and keep the denominators the same.
  • 5/6+3/6 =8/6
  • Divide 8 by 6.
  • 8 ÷ 6 = 1 R2
  • 8/6=1 2/6
  • Write the answer in simplest form. Divide both the numerator and the denominator by 2.
  • 2 ÷ 2/6 ÷ 2 = 1/3
  • Now write the answer.
  • 5/6+1/2 =1 1/3

💣 Subtract .

41.9–0.6 = ________

  • Remember to line up the decimal points. You can write extra zeroes to make equivalent decimals. 41.9–0.6=?
  • Subtract as you would subtract whole numbers. Remember to write the decimal point in the answer.41.9–0.6= 41.3
  • The difference is 41.3.

💣 Add.

Simplify your answer and write it as a proper fraction or as a whole or mixed number.

1/10 +1/5 =_____

  • You can use 10 as the common denominator.
    Multiply the numerator and the denominator of 1/5 by 2 to find an equivalent fraction.
  • 1 × 2/5 × 2 =2/10
  • Now add the fractions. Add the numerators and keep the denominators the same.
  • 1/10+2/10=3/10
  • 3/10 is written in simplest form.

Let’s practice!🖊️