O‘qish i-chorak T/R

4-nazorat ishi (yozma ish)
I variant
1. Agar a = 18, b = 3 bo‘lsa, a + b, a – b, a  b va a : b ifodalarning qiymatlarini toping.
2. Yig‘indini songa bo‘ling:
(18 + 12) : 3 (25 + 15) : 5
3. Misollarni yeching:
42 : 2 56 : 4 84 : 6
4. Uzunligi 25 metr bo’lgan suzish xavzasida 100 metr masofaga suzish uchun necha marta borib kelish kerak?
5. Bolalar bog‘chasida uchta navbatchi nonushta uchun 45 stakan sut keltirishlari kerak edi. Birinchi navbatchi 24 stakan, ikkinchi navbatchi undan 2 marta kam sut keltirdi. Uchinchi navbatchi necha stakan sut keltirgan?


II variant
1. Agar a = 24, b = 4 bo‘lsa, a + b, a – b, a  b va a : b ifodalarning qiymatlarini toping.
2. Yig‘indini songa bo‘ling:
(24 + 16) : 4 (32 + 16) : 8
3. Misollarni yeching:
24 : 2 36 : 3 65 : 5
4. Uzunligi 20 metr bo’lgan suzish xavzasida 80 metr masofaga suzish uchun necha marta borib kelish kerak?
5. Maktab jonli burchagidagi 4 ta akvariumda 7 tadan, 3 ta akvariumda esa 9 tadan baliq bor. Jonli burchakda hammasi bo‘lib nechta baliq bor?