多位数竖式乘法

会用规范的竖式写法，计算不超过四位数的整数乘一位数、以及两位数乘两位数的乘法，包括列竖式的完整步骤；并能用面积模型说明算理。

Multiply a whole number of up to four digits by a one-digit number, and multiply two two-digit numbers, using formal written methods including long multiplication; illustrate with area models

学习证据 / Evidence

• 用规范的竖式格式计算 2,347 × 6
• 用竖式乘法计算 34 × 27
• 画出 45 × 23 的面积模型，并把它与竖式写法的步骤联系起来

• Calculate 2,347 × 6 using formal written layout
• Calculate 34 × 27 using long multiplication
• Draw an area model for 45 × 23 and connect to the written method

评估问题 / Assessment

{{name}}能不能用列竖式的方法算出像“2,346 × 7”或“43 × 28”这样的题目，并把竖式写规范、一步一步地算完？

Can {{name}} work out something like '2,346 × 7' or '43 × 28' using the formal column method — setting it out carefully and working through all the steps?