笔算乘法
Written Multiplication
用规范的竖式写法计算两、三位数乘一位数
Multiply two-digit and three-digit numbers by a one-digit number using formal written layout
学习证据 / Evidence
- 列竖式计算47 × 6
- 列竖式计算234 × 5，注意进位
- 用估算检查答案（例如：234 × 5 ≈ 200 × 5 = 1000）
- Set out and solve 47 × 6 using short multiplication
- Set out and solve 234 × 5 using short multiplication with carrying
- Check the answer using estimation (e.g. 234 × 5 ≈ 200 × 5 = 1000)
评估问题 / Assessment
{{name}}能否用竖式规范地算出'347 × 6'——分别乘每一位数字，并在需要时进位？
Can {{name}} work out '347 × 6' by setting it out formally in a column — multiplying each digit separately and carrying where needed?