Mathematics
Fractions
Procedural
11–13 yrs
Decimals and fractions (age 11+)
小数与分数（11岁以上）
Description
Work interchangeably with terminating decimals and their corresponding fractions (such as 3.5 and 7/2 or 0.375 and 3/8); convert fluently between the two forms
Mastery Evidence
- Convert any terminating decimal to a fraction in simplest form
- Convert any fraction with a denominator whose prime factors are only 2 and 5 to a terminating decimal
- Explain why some fractions produce terminating decimals and others do not
Assessment Prompt
If your child sees 0.375 on a calculator display, can they convert it to a fraction in its simplest form — without using the calculator?
