Mathematics Number Representation & Place Value Procedural 10–11 yrs

Reading and writing numbers (age 10+)

数的读写（10岁以上）

Description

Read, write, and compare decimals to thousandths using base-ten numerals, number names, and expanded form; compare using >, =, < based on place-value meaning

Mastery Evidence

✓ Write 347.392 in expanded form: 3×100 + 4×10 + 7×1 + 3×(1/10) + 9×(1/100) + 2×(1/1000)
✓ Compare 0.372 and 0.38 using place-value reasoning
✓ Write 'five and sixty-two thousandths' as 5.062

Assessment Prompt

Can your child read and write decimals like 3.047 or 0.625, say what each digit means (3 ones, 0 tenths, 4 hundredths, 7 thousandths), and put a set of decimals in order?