Unit 10 Contents

A Flat as One Whole

To think about decimal fractions, we used the length of one meterstick as a unit whole. To think about decimal fractions another way, we are going to use one flat as the unit whole.

11. Use skinnies to cover a flat.
1. How many skinnies did you use?
2. If a flat is the unit whole, then what fraction is a skinny?
1. Place 6 skinnies on your flat. Skip count by tenths as you place each skinny. Start like this: one-tenth, two-tenths, three-tenths, etc. Write down the words that you say as you count.

2. What fraction of the flat is 6 skinnies?
3. Write this fraction as a common fraction and a decimal fraction.
1. Nicholas placed 4 skinnies on his flat. Put 4 skinnies on your flat. Skip count by tenths as you place each skinny. Write down the words that you say as you count.
2. What fraction of the flat is 4 skinnies?
3. Write this fraction as a common fraction and as a decimal fraction.
1. Linda placed 10 skinnies on her flat. Put 10 skinnies on your flat. Skip count by tenths as you place each skinny. Write down the words that you say as you count.
2. How many tenths is 10 skinnies?
3. Linda noticed that 10 skinnies covered one whole. She recorded this 3 ways: , 1, and 1.0. Explain how each of these represents the same number.