ばいおりんの慣性系相対性理論

そろばんアルゴリズム（足し算編）

数理論へ戻る

大学生のための数学へ戻る

2026.04.02

３桁の足し算

　　　M ＝ m₂×10²＋m₁×10¹＋m₀×10⁰　　( n ＝ 1,2,3,…,9 )
　　　N ＝ n₂×10²＋n₁×10¹＋n₀×10⁰　　( m ＝ 1,2,3,…,9 )

M に N を加える。

₂

²

^－2

₂

₂

₂

₂

₂

₂

₂

₂

₂

²

₂

²

₂

²

₁

¹

₀

⁰

₂

²

₁

¹

₂

²

^－1

₁

₁

₁

₁

₁

₁

₁

₁

₁

¹

₂

²

₁

¹

₂

²

₁

¹

₀

⁰

₂

²

₁

¹

₀

⁰

₀

₀

₀

₀

₀

₀

₀

₀

₀

プログラムの内容：

<!DOCTYPE html>
<html lang="ja">
<head>
<meta charset="UFT-8">
<meta name="Viewpoint" content="width=device-width,initial-scale-1.0">
<script>

function main() {
   const T1 = [];
   const T2 = [];
   const T3 = [];
   const T4 = [];
   const T5 = [];
   const T6 = [];
   for ( let i=0; i<3; i++ ) {
      T1[i] = 0;
      T2[i] = 0;
      T3[i] = 0;
      T4[i] = 0;
      T5[i] = 0;
      T6[i] = 0;
                             }
   const M = eval(document.frm.ins1.value);
   const N = eval(document.frm.ins2.value);
   let m2 = Math.floor(M/100);
   let m1 = Math.floor((M-m2*100)/10);
   let m0 = M - m2*100 - m1*10;
   let n2 = Math.floor(N/100);
   let n1 = Math.floor((N-n2*100)/10);
   let n0 = N - n2*100 - n1*10;
   let a2;
   let a3 = 0;
   let b0;
   let b1;
   let Q = m2*100+m1*10+m0;
   let W = n2*100+n1*10+n0;
   Q = Q/100;
   if ( m2+n2 < 5 ) {
      a2 = m2 + n2;
                    }
   else {
      if ( m2+n2 < 10 ) {
         a2 = m2 + 5 + ( n2 - 5 );
                        }
      else {
         T1[0] = 0;
         T1[1] = 0;
         T1[2] = a3;
         ireru1(T1);
         a3 = T1[2];
         a2 = m2 + ( n2 - 10 );
           }
        }
   Q = a3*1000+a2*100+m1*10+m0;
   Q = Q/10;
   if ( m1+n1 < 5 ) {
      b1 = m1 + n1;
                    }
   else {
      if ( m1+n1 < 10 ) {
         b1 = m1 + 5 + ( n1 - 5 );
                        }
      else {
         T2[0] = 0;
         T2[1] = a3;
         T2[2] = a2;
         ireru1(T2);
         a3 = T2[1];
         a2 = T2[2];
         if ( a2 === 10 ) {
            T3[0] = 0;
            T3[1] = 0;
            T3[2] = a3;
            ireru1(T3);
            a3 = T3[2];
            a2 = 0;
                          }
         b1 = m1 + ( n1 - 10 );
           }
        }
   Q = a3*1000+a2*100+b1*10+m0;
   if ( m0+n0 < 5 ) {
      b0 = m0 + n0;
                    }
   else {
      if ( m0+n0 < 10 ) {
         b0 = m0 + 5 + ( n0 - 5 );
                        }
      else {
         T4[0] = a3;
         T4[1] = a2;
         T4[2] = b1;
         ireru1(T4);
         a3 = T4[0];
         a2 = T4[1];
         b1 = T4[2];
         if ( b1 === 10 ) {
            T5[0] = 0;
            T5[1] = a3;
            T5[2] = a2;
            ireru1(T5);
            a3 = T5[1];
            a2 = T5[2];
            b1 = 0;
            if ( a2 === 10 ) {
               T6[0] = 0;
               T6[1] = 0;
               T6[2] = a3;
               ireru1(T6);
               a3 = T6[2];
               a2 = 0;
                             }
                          }
         b0 = m0 + ( n0 - 10 );
           }
        }
   Q = a3*1000+a2*100+b1*10+b0;
   document.frm.ans.value = Q;
                }

function ireru1(U) {    // (U[0]*100+U[1]*10+U[2])+1
   if ( U[2] == 9 && U[1] == 9 ) {
      U[0] = U[0] + 1;
      U[1] = 0;
      U[2] = 0;
                                 }
   else if ( U[2] == 9 && U[1] < 9 ) {
      if ( U[1] == 4 ) {
         U[1] = U[1] + 5 - 4;
         U[2] = 0;
                       }
      else {
         U[1] = U[1] + 1;
         U[2] = 0;
           }
                                     }
   else {
      U[2] = U[2] + 1;
        }
                   }

function CLS() {
   document.frm.ins1.value = "";
   document.frm.ins2.value = "";
   document.frm.ans.value = "";
               }

</script>
</head>
<body>
<form name="frm">
加えられる３桁の自然数？　<input type="text" name="ins1" id="ims1" size="8" value="999" style="text-align:right"><br>
加える３桁の自然数？　<input type="text" name="ins2" id="ims2" size="8" value="999" style="text-align:right"><br><br>
　　<input type="button" value="実行" onclick="main()">　<input type="button" value="消去" onclick="CLS()">　　<input type="text" name="ans" id="ams" size="8" style="text-align:right"><br><br>
</form>
</body>
</html>