V=abh
h=V/ab
h=198/8*4,5=5,5(дм)=5дм 5 см
Ответ: 5дм 5 см.
7/8 -(-3/10)=7/8+3/10=35/40+12/40=47/40=1_7/40
11/12- 17/18 = 33/36 - 34/36 = -1/36
3,11+24,4+5,074=32,584. до сотых 32,58
1)
48 : 8 = 6
48 : 6 = 8
6 * 8 = 48
8 * 6 = 48
2)
45 : 9 = 5
45 : 5 = 9
5 * 9 = 45
9 * 5 = 45
3)
54 : 9 =6
54 : 6 = 9
6 * 9 = 54
9 * 6 = 54
4)
95 - 90 = 5
95 - 5 = 90
5 + 90 = 95
90 + 5 = 95
5)
3 * 2 = 6
2 * 3 = 6
6 : 3 = 2
6 : 2 = 3
6)
18 : 3 = 6
18 : 6 = 3
6 * 3 = 18
3 * 6 = 18
7)
30 : 6 = 5
30 : 5 = 6
5 * 6 = 30
6 * 5 = 30