Для заполнения таблицы нужно подставить значения \( a \) в указанные выражения.
| \( a \) | 6 | 9 | 12 | 15 | 21 | 18 | 60 | 30 |
| \( a:3+20 \) | \( 6:3+20 = 2+20=22 \) | \( 9:3+20 = 3+20=23 \) | \( 12:3+20 = 4+20=24 \) | \( 15:3+20 = 5+20=25 \) | \( 21:3+20 = 7+20=27 \) | \( 18:3+20 = 6+20=26 \) | \( 60:3+20 = 20+20=40 \) | \( 30:3+20 = 10+20=30 \) |
| \( (a+3)\cdot 3 \) | \( (6+3)\cdot 3 = 9\cdot 3=27 \) | \( (9+3)\cdot 3 = 12\cdot 3=36 \) | \( (12+3)\cdot 3 = 15\cdot 3=45 \) | \( (15+3)\cdot 3 = 18\cdot 3=54 \) | \( (21+3)\cdot 3 = 24\cdot 3=72 \) | \( (18+3)\cdot 3 = 21\cdot 3=63 \) | \( (60+3)\cdot 3 = 63\cdot 3=189 \) | \( (30+3)\cdot 3 = 33\cdot 3=99 \) |
| \( a\cdot 5+7 \) | \( 6\cdot 5+7 = 30+7=37 \) | \( 9\cdot 5+7 = 45+7=52 \) | \( 12\cdot 5+7 = 60+7=67 \) | \( 15\cdot 5+7 = 75+7=82 \) | \( 21\cdot 5+7 = 105+7=112 \) | \( 18\cdot 5+7 = 90+7=97 \) | \( 60\cdot 5+7 = 300+7=307 \) | \( 30\cdot 5+7 = 150+7=157 \) |
| \( 10\cdot a-40 \) | \( 10\cdot 6-40 = 60-40=20 \) | \( 10\cdot 9-40 = 90-40=50 \) | \( 10\cdot 12-40 = 120-40=80 \) | \( 10\cdot 15-40 = 150-40=110 \) | \( 10\cdot 21-40 = 210-40=170 \) | \( 10\cdot 18-40 = 180-40=140 \) | \( 10\cdot 60-40 = 600-40=560 \) | \( 10\cdot 30-40 = 300-40=260 \) |
| \( a\cdot (6+2) \) | \( 6\cdot (6+2) = 6\cdot 8=48 \) | \( 9\cdot (6+2) = 9\cdot 8=72 \) | \( 12\cdot (6+2) = 12\cdot 8=96 \) | \( 15\cdot (6+2) = 15\cdot 8=120 \) | \( 21\cdot (6+2) = 21\cdot 8=168 \) | \( 18\cdot (6+2) = 18\cdot 8=144 \) | \( 60\cdot (6+2) = 60\cdot 8=480 \) | \( 30\cdot (6+2) = 30\cdot 8=240 \) |
Ответ: Заполненная таблица представлена выше.