Addition with carrying for 1st graders: 5-question 3-minute check before teaching (1st grade elementary school)

Some children lose track while counting on their fingers for "8+5". When addition problems exceeding 10 appear, they suddenly ...

For children struggling with addition with carrying. First, how far back should we go?

In first-grade math, I believe many classes are working on addition with carrying at this time of year.Problems like "8+5" or ...