今日の暗算（2026/9/28）

368 + 477 = ?

1,003 − 687 = ?

64 × 25 = ?

1,176 ÷ 8 = ?

7,000 − 48 × 7 = ?

9,000 − 397 = ?

83 × 77 = ?

1,008 ÷ 7 = ?

125 × 8 × 23 = ?

112 × 88 = ?