Description of Arithmetical Restorations Replacing one part of the problem of 1 + 1 = 2 with □,An example of 1 + □ = 2.It is Arithmetical Restorations this □.By the way, answer □ = 1 is correct.In this app, the number entering □ is only one digit integer.The difficulty level was prepared in all four stages. You can challenge the next level of difficulty by correcting all difficulty levels for one difficulty level.If the difficulty level gets higher, you will answer more than one number in a single question, but if you hit all the figures, it will be the correct answer, if there is even one outcome, it will be incorrect.I tried to prepare relief measures for those who can not clear it easily.How is it in the head gymnastics in a little free time?By the time all degrees of difficulty are cleared, may arithmetic be good at? WhaFortune Tiger t?For your referenceBeginner and intermediate level 1 to 3 years level in elementary schoolAdvanced, Upper High Grade Level for Elementary School 4-6 Years(Depending on the region, the progress speed of the lesson differs, the appropriate level may be different)

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