Your child will learn fractions and decimals in key stage 2 (KS2). They should be able to:

  • Compare and order fractions with the same denominator.
  • Convert improper fractions.
  • Add and subtract fractions with the same denominator.
  • Multiply proper fractions by whole numbers.
  • Round decimals with two decimal places to the nearest whole number.
  • Order numbers with up to three decimal places.
  • Recognise the per cent symbol (%) and understand that it relates to ‘number of parts per hundred).
  • Use common factors to simplify fractions.
  • Compare and order fractions.
  • Add and subtract fractions with different denominator.
  • Multiply one-digit numbers with up to two decimal places by whole numbers.
  • Use written division methods in cases where the answer has up to two decimal places.


Common Fractions and Denominators 

Some examples of common fractions are 1/2, 1/3, 1/4, 1/5 1/8. Before we can add and subtract fractions they all need to have the same common denominator, this means that they all need to have the same bottom number. For example to add 1/2 and 1/4 time both the top and bottom number by two. So that would be 2/4 and then we can either add or subtract the fraction. The most important thing is that what ever you do to the bottom number you need to do to the top number as well.

KS2 Fractions and Decimals Activities 

Below are some examples of games and ideas to help your children learn about ks2 fractions and decimals in a fun way.

Newspaper Ads

Look through the newspaper for sale ads. How many different fractions can you find in the ads? Choose an ad with a fraction, such as ‘1/3 off.’ What is the savings for the item advertised?

Recipe Challenge

Together find a favorite recipe where ingredients are shown in fractional amounts. Suppose you need to double or even triple for serving at a party. Have your children find the new amount of each ingredient by multiplying by 2 or 3.

Paper Folding

You can show multiplications by folding paper. Study the example below.

1/2 x 1/4

Firstly, fold the paper into fourths. Next, fold the folded paper in half.

Then unfold the paper and colour one section of the paper.

1/2 x 1/2 = 1/8

Now try these. Use a different piece of paper for each one.

  1. 1/2 x 2/3
  2. 2/3 x 3/4
  3. 1/4 x 2/3
  4. 3/4 x 3/8


Fractions in the Real World

Find examples of uses of fractions outside the classroom. Some possibilities include recipes (2 and 1/4 cups), measurements (5 and 1/2 feet) time (quarter to nine), fabric (3 and 3/4 meters). Make a collage of the samples you find.

Function Cards

Use the ace (which will be 1) through to 10 cards from a deck of cards. Deal all the cards to two or more players. All players turn over the top two cards and each make a proper fraction (a proper fraction is less than 1). The player who makes the greater fraction takes all those cards and keeps them facedown on the bottom of their pile. Play continues until one player has all of the cards. For example, 3/10 and 5/9. The player with 5/9 wins the cards because 5/9 is greater than 3/10.

Pizza Fractions

Next time your family has pizza, figure out what fraction of the pizza each person ate. (Remember to cut the pizza in equal wedges before serving.) The total number of wedges will be the denominator of each person’s serving. The reduce fractions to the lowest terms.

There is other fun and easy ways in which you can help your children learn about fractions and decimals. Here is a selection of apps/games available for tablet computers such as iPad’s, and also games that can be played on the Internet to help your children learn ks2 fractions and decimals.