3.Yangi mavzu bayoni. (15 daqiqa)
733-739 misollar.
Misollarni yechishda "Qurilishga sayohat " o`yinidan foydalanamiz.Bunda har bir qatordan 1ta o`quvchi chiqib, rasmdagi mislni yechib plakatga yopishtiradi.Qaysi qator tez qurib bo`lsa shu qator g`olib bo`ladi.
733. Quyidagi sonlarning modullarini toping va javobni tenglik ko`rinishidayozing: 1) -6, 44, -150, 75, -78 2) -52, 39, -45, -13, 21.
Yechish:1) |-6|=-(-6)=6 |44|=44
|-150|=-(-150)=150 |75|=75 |-78|=-(-78)=78
2) |-52|=-(-52)=52 |39|=39
|-45|=-(-45)=45 |-13|=-(-13)=13
|21|=21
734.Koordinata tog`ri chizig`ida sanoq boshi 0 nuqtadan A(6), B(-7), C(-2), D(-4), E(-3) nuqtagacha bo`lgan masofani toping.
Javob:6,7,2,4,3.
735. Agar a=-3;10;-73;55;-6 bo`lsa,-a va |a| ni toping.
-a=3 -a=-10 -a=73 -a=-55 -a=6.
|a|=3 |a|=10 |a|=73 |a|=55 |a|=6
736. Hisoblang:
1.|-15|+|-20|-|-3|*|-5|=15+20-15=20.
2. |-32|+|-32|÷|-8|-|-4|=32+4-4=32.
737.Modullari teng ammo o`zlari teng bo`lmagan 4 ta son yozing.
-1 va 1, -15 va 15 ,30 va -30, 45 va -45.
738. 4|a|-|b|+|a| ifodaning qiymatini toping,bunda:
1) a=-24,b=-14 2) a=-32 b=-45
3) a=-7 , b=-20 4) a=-5 , b=-15.
1) 4*24-14+24=96-14+24=106
2) 4*32-45+32=128-45+32=115
3) 4*7-20+7=28-20+7=15
4) 4*5-15+5=10
4. Mustahkamlash (10 daqiqa)
739. Tenglamani yeching:
1) |x-8|=0
-x+8=0
2) |-x|=9 3) |x|-4=0 4) |-x|=-16 G`olib qatorga ragbat beraman.
5. O`quvchilarni baholash.
Dars davomida faol qatnashgan qatorni rag`batlantiraman.O`quvchilarni faolligiga qarab baholab, baholarini e`lon qilaman,dars yakunida o`quvchilarga uyga vazifa beraman.
6. Uyga vazifa: 740-741-misollar.
O`qituvchi: I.O’ktamov
O`TIBDO`: U.Djabbarov
Sana: 05.02.2020 yil
Sinf: 7-“A”
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