Addition of 3 and 4 digits numbers.
English
일반
30
질문
3 분
질문당
10:03
평균 시간
3.0
대회 점수
10
참가자
2 댓글
Eager Clam
Question 10 does not have a correct answer. The use of words over illustration in the explanation of addition takes away from learning.
Happy Piranha author
Thanks, suggestion also noted. I will check to edit it if possible to.
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