今日の暗算（2026/9/30）

586 + 379 = ?

804 − 467 = ?

76 × 25 = ?

1,296 ÷ 9 = ?

7,200 − 48 × 7 = ?

8,405 − 1,297 = ?

79 × 81 = ?

936 ÷ 6 = ?

125 × 8 × 17 = ?

106 × 94 = ?