Mathematics
Number Representation & Place Value
Procedural
12–14 yrs
Powers of Ten Notation
10的幂次表示法
Description
Interpret and compare numbers in standard form A × 10ⁿ where 1 ≤ A < 10 and n is an integer; convert between ordinary numbers and standard form
Mastery Evidence
- Convert large and small numbers into standard form A × 10ⁿ
- Convert numbers from standard form back to ordinary notation
- Compare and order numbers given in standard form
Assessment Prompt
Can your child write 3,400,000 as 3.4 × 10⁶ and convert back — understanding that standard form is a shorthand for very large or very small numbers?
Prerequisites 1
Square and cube numbers
科学记数法使用10的幂次，需要先理解整数指数
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