Mathematics
Fractions
Procedural
9–10 yrs
Comparing Decimals
比较小数
Description
Compare two decimals to hundredths (or up to three decimal places) by reasoning about size using place-value understanding; record with >, =, <
Mastery Evidence
- Compare 0.45 and 0.405 and explain which is greater
- Order 3.142, 3.14, 3.2 from smallest to largest
- Justify that 0.7 = 0.70 = 0.700 using place-value reasoning
Assessment Prompt
If your child compares 0.45 and 0.54, can they use place value to explain which is bigger — without reaching for a calculator?
