列算式
Writing Number Sentences
写出用数字记录计算的简单算式，并能在不计算结果的情况下解释算式（例如，认识到 3 × (18932 + 921) 是 18932 + 921 的三倍）。
Write simple numerical expressions that record calculations with numbers, and interpret numerical expressions without evaluating them (e.g. recognise that 3 × (18932 + 921) is three times as large as 18932 + 921)
学习证据 / Evidence
- 写一个带括号的算式，表示“把 8 和 7 相加，再乘以 2”
- 不计算结果，解释 4 × (365 − 12) 表示什么
- 不计算结果，比较两个算式并判断哪个更大
- Write an expression for 'add 8 and 7, then multiply by 2' using parentheses
- Explain what 4 × (365 − 12) represents without computing it
- Compare two expressions and determine which is larger without evaluating
评估问题 / Assessment
{{name}} 能否看着“4 × (5 + 3)”说出“这是 5 加 3 的结果的 4 倍”——也就是把算式当作对计算的描述来读，而不必先算出结果？
Can {{name}} look at '4 × (5 + 3)' and say 'that's 4 times the result of adding 5 and 3' — reading the expression as a description of a calculation, without having to work it out first?