All answers for D1 kumon answers I hope this helps. 
How to do long division (Kumon Maths Level D)
公文式算数レベル D 概要: 筆算と分数
Kumon D181-185 Answers
Kumon Math Level 3A-D Home Grading
Level E Kumon Math Answers
数学捕虜収容所の公文
Kumon Level F answers
公文算数 レベルD
Kumon Level D Observation
Fast Multiplication Trick | Interesting math tricks #maths #shorts
World champion in mental calculation 🏆
Human Calculator Solves World’s Longest Math Problem #shorts
Kumon Short Film II (The Love For Learning)
kumon (Level D)
How To Solve Math Percentage Word Problem?
7歳児は算数に公文式の勉強法を使っています
Every kid from Kumon knows this story #skit 🤣
F*** You Kumon
Assessment Test Practice: Questions and Answers