Navoiy shahar 16-davlat ixtisoslashtirilgan umumta`lim maktabi matematika fani o’qituvchisi Boboyeva Gulnora Mirzayevnaning 6-sinf uchun “Davriy kasrlar” mavzusida bir soatlik ochiq dars

0,(5)+0,(1)=5/9+1/9=6/9=2/3

• 0,(5)+0,(1)=5/9+1/9=6/9=2/3
• (0,(6)-0,(45))·0,(33)=((6/9-45/99)· 33/99)= =0,(07)
• 0,(8)+0,(3)=8/9+3/9=11/9=1, 2/9
• 3,2(62)-1,(15)=(3262-32)/990-(115-1)/99= =21,(1)

Uchala guruhga umumiy masala beriladi.

• Daryo ustidagi ko`prik yonida Soddadil va Mug`ambir uchrashib qolishibdi. Mug`ambir: men senga yaxsilik qilmoqchiman. Shu ko`prikdan har gal o`tganingda cho`ntagingdagi (hamyoningdagi) puling 2 barobar ko`payib qoladi, ammo sen bu yaxshilik evaziga ko`prikdan har gal o`tgacha, 48 so`m berasan, debdi. Ammo u ko`prikdan 3 marta o`tgach, cho`ntagida puli qolmaganini sezibdi, dastlab Soddadilda qancha pul bo`lgan edi?

Yechish: 1-usul teskaridan yechish usulidan foydalanamiz
0+48=48:2=24
24+48:2=36
(36+48):2=42
Javob: Dastlab Soddadilda 42 so`m
2-usul . tenglama usuli
((((x+x)-48)·2)-48)·2-48=0
((2x-48)·2)-48=24
(2x-48)·2=24+48
2x-48=72:2
2x=36+48
2x=84
X=42

To`rtburchak

A	1/9=
H	24/99=
B	1/3=
O	1,373737…=
R	0,0717171…=
	0,(3)	0,(1)	0,(24)	1,(37)	0,0(71)

Doira

A	7/9=
M	48/99=
K	0,8333…=
A	0,232323…=
L	2/11=
U	0,1222…=
S	2,(0)
	1,(9)	0,1(2)	0,(48)	0,(23)	0,(18)	0,(7)	0,8(3)

Uchburchak

A	5/9=
R	98/99=
O`	1/99=
N	9,108108108…=
V	4,333…=
Z	2/45=
	9,(108)	0,(5)	4,(3)	0,(98)	0,(01)	0,0(4)

Uyga vazifa: 51-52-53-misollar