15
0 ni songa, sonni 1 ga va sonni o‘zini
o‘ziga bo‘lish
64.
Yechilishini tushuntiring:
1)
0 : 8 = 0
0 : 67 = 0
7 : 0
83 : 0
0 ni har qanday songa bo‘lganda 0 chi-
qadi. Sonni 0 ga bo‘lish mumkin emas.
2)
9 : 1 = 9
17 : 1 = 17
78 : 1 = 78
Har qanday sonni 1 ga bo‘lganda bo‘ lin -
gan sonning o‘zi chiqadi.
3)
8 : 8 = 1
16 : 16 = 1
100 : 100 = 1
Har qanday sonni o‘zini o‘ziga bo‘lgan da
1 soni hosil bo‘ladi.
65.
0 : 38
48 : 0
3 : 1 : 3
23 : 1 – 0 : 99
25 : 1
81 : 8
0 : 7 : 6
59 : 59 + 59 : 1
66.
Bir-biridan 100 m uzoqlikda turgan ikki o‘quv-
chi bir-biri tomon yura boshlashdi.
Birinchi
o‘quvchi 25 m yurganda, ikkinchisi 35 m yur-
di. Ular orasida necha metr masofa qoldi?
67.
72 : 8 + 8 : 1
⋅
9
36 : 4 + 27
⋅
1 – 23 : 23
(6
⋅
9 – 24 : 4) : 1
7
⋅
8 + 0 : (58 – 46) – 47
68.
Sirkuldan foydalanib radiusi 2 sm va 3 sm
bo‘lgan aylana va doiralar chizing.