100以内的加法
Adding within 100
使用基于位值的策略进行100以内的加法，包括两位数加一位数，以及两位数加整十数。
Add within 100 using strategies based on place value, including adding a two-digit and one-digit number, and a two-digit and a multiple of 10
学习证据 / Evidence
- 利用位值计算46 + 7（46 + 4 + 3 = 53）
- 运用对十位的理解计算38 + 40 = 78
- 将这种策略与书面计算方法联系起来，并解释推理过程
- Calculate 46 + 7 using place value (46 + 4 + 3 = 53)
- Calculate 38 + 40 = 78 using tens understanding
- Relate the strategy to a written method and explain the reasoning
评估问题 / Assessment
{{name}}能通过分别思考十位和个位来算出像“47 + 8”或“35 + 50”这样的题目，而不是一个一个地数吗？
Can {{name}} work out sums like '47 + 8' or '35 + 50' by thinking about the tens and ones separately rather than counting up one at a time?