5- sinflar uchun zakovat savollari

5- sinflar uchun zakovat savollari

1. 
   ABCD turtburchakning perimetiri 140 sm ga teng bo’lsa, tomonlari mos ravishda AB=2x ,BC=5x, CD=3x ,DA=4x ga teng bo’lgan turtburchakning tomonlar uzunligini toping?
   
2. 
   Amallarni bajaring?
   

(203 – 199)*100+120:2

3. 
   Aftomabel 72 km li yo’lni 6 soatda bosib o’tgan bo’lsa 108 km li yo’lni necha soatda bosib o’tadi?
   
4. 
   To’g’ri turtburchakning perimetiri 280 sm gat eng bo’lisa tomonlari mos ravishda 8x va 6x ga teng bo’lgan turtburchakning tomonlar uzunligini toping?
   
5. 
   Qulay usul bilan hisoblang
   

a)448+323+52+77+17+13
b)511+245+855+89+10
c)11+12+13+14+15+16+17+18+19+20
6. Harfiy ifodaning qiymatini toping?
a) (19-7b)+(9b- 8)=
b=9
b) (5a-3)+(8a+16)=
a=22
c) (126a- 12)+(12a+13)=
a=13