©2025 数学クラブ http://sugaku.club/
月 日（ ）
● 分配法則 [3D0-00]
| (1) | | | | | | | | | | | | | | | | | | | | | | | | | | | | | { | 8 | ＋ | ( | −1 | ) | } | × | ( | −4 | ) | = | | × | ( | −4 | ) | ＋ | ( | −1 | ) | × | ( | −4 | ) | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
|
|
|
|
|
| (4) | | | | | | | | | | | | | | | | | | | | | | | { | −9 | ＋ | ( | −7 | ) | } | × | 8 | = | −9 | × | | ＋ | ( | −7 | ) | × | | | | | | | | | | | | | | | | | | | | | | | |
|
| (5) | | | | | | | | | | | | | | | | | | | | | | | | | { | 4 | ＋ | ( | −10 | ) | } | × | ( | −6 | ) | = | 4 | × | | ＋ | ( | −10 | ) | × | | | | | | | | | | | | | | | | | | | | | | | | | |
|
| (6) | | | | | | | | | | | | | | | | | | | | | | | | | −9 | × | { | −2 | ＋ | ( | −3 | ) | } | = | −9 | × | | ＋ | ( | −9 | ) | × | ( | −3 | ) | | | | | | | | | | | | | | | | | | | | | | | | |
|
|
|
| (8) | | | | | | | | | | | | | | | | | | | | | | | | | { | 1 | ＋ | ( | −9 | ) | } | × | ( | −1 | ) | = | 1 | × | | ＋ | ( | −9 | ) | × | | | | | | | | | | | | | | | | | | | | | | | | | |
|