https://www.khanacademy.org/math/arithmetic/arith-review-multiply-divide/quiz/arith-review-multiply-divide-quiz-4?modal=1

1. Közösség
2. Technical Issues and Workarounds
3. wrong answer in exercise

https://www.khanacademy.org/math/arithmetic/arith-review-multiply-divide/arith-review-multistep-word-problems/e/arithmetic_word_problems?modal=1

1. Közösség
2. Technical Issues and Workarounds
3. wrong answer in exercise