Decomposition can be made easy when you use a good story problem! Use these worksheets to help students decompose numbers to 5 and practice looking at numbers in a flexible way.
The story: There were kids playing on the playground. Some kids played on the monkey bars. Some kids played on the slide. How many kids were on the monkey bars and how many were on the slide?
Pages 2-3: Use cubes, counters, or other manipulatives to find different combinations of 3, 4, and 5. Have students represent their findings by drawing kids in the boxes.
Pages 4-5: Look at the numbers in each box to find out how many kids are on the monkey bars and how many kids are on the slide. Draw to show the kids, then count how many kids there are in all.
Page 6: Use this larger playground mat for manipulatives, if needed.