暗算検定 〜みとり暗算編〜

「暗算とは」
筆算やそろばん・計算機などを使わず、頭の中で計算すること。
みとり暗算は、足し算と引き算での問題。
10級〜3級までの問題を出題。
全問正解できるかな？

7〜10級　問題数10問
6級　　　問題数10問
5級　　　問題数10問
4級　　　問題数5問
3級　　　問題数5問

※問題は独自で考えたもので、日本珠算連盟とは一切関係ありません "Mental arithmetic The"
Without using such calculation by writing and abacus, calculator, to calculate in your head.
End-of-life care mental arithmetic, the problem in the addition and subtraction.
The questions the issue of up to 10 primary to tertiary.
I wonder if possible all the questions correct?

7-10 grade issue number 10 questions
6 primary problem number 10 questions
Grade 5 issue number 10 questions
Quaternary issue number 5 questions
Tertiary issue number 5 questions

※ one problem that was considered unique, and they are not related to the Japan Federation of Abacus