Write a fraction as a decimal
to-decimal · skill · prompt: Write {x}/{y} as a decimal.
| Method | Idea | Best when | Calls |
|---|---|---|---|
Divide divide |
Divide the numerator by the denominator (long division or a calculator). | Always works. | — |
Scale to 10, 100, 1000 power_of_ten |
Multiply top and bottom so the denominator becomes 10, 100, or 1000, then read off the decimal. | The denominator only has factors 2 and 5 (2, 4, 5, 8, 20, 25, …). | — |
Each graph starts at the question and branches at × Which first step? into every first step a student might write. Methods that share a first step meet there and split at × Which next step?. Each route then follows its method to the answer. The legend at the bottom of each graph explains the shapes.
Write 3/4 as a decimal.
Write 5/8 as a decimal.
