You’re right, it does take time! I try to grade math papers by lunch time and catch them right after lunch if there hasn’t been a free moment. It doesn’t always happen with seven kiddos! I also know when I see an increase in mistakes that the child either
A) Is hurrying to much and making careless mistakes.
B) Is distracted by siblings and stops mid-problem, then returns to it and has lost where they were in the process.
C) Not understanding a concept and needs to slow down, back up, and cement what’s missing.
For motivation occasionally I will plan an activity we can do together when they reach a goal. So, if my oldest needs to really work on her multiplication facts and I want her to tackle it willingly we’ll set the goal to celebrate when she does XYZ. Money is in short supply here, so our activities often are to bake something, craft something, go to the park/zoo we have a membership to/etc, or get a day off school or off 1 subject for up to a week.