Mavzu: sonlarni bo’lish (takrorlash)

Nolni noldan farqi ixtiyoriy butun son n ga bo’lish natijasi 0 ga tengdir:


0:n=0


Nolga bo’lish mumkin emas!

Bo’lishni bajaring. Natijaning to’g’riligini bo’lish va ko’paytirish bilan tekshiring:

1) 72:(-4); 2) -75:3; 3) -48:(-6); 4) -36:(-4).

Noma’lum son x ni toping:

1) 25x=-100 2) –x:3=-5 3) 5x+70=-40:8.

x=-100:25 x=15; 5x=-5-70

x=-4; x=-15.

Hisoblang:

1) (-17+15-14):2=-8; 3) (-100-20-10):13=-10;

2) (-7+9-6):(-4)=1; 4) (-36-48-72):12=-13.

Jadvalni to’ldiring:

k	-1	1	-1	15	20	-28	-32	-45	-72	-24
n	1	-1	-1	-3	-4	-7	8	-15	4	6
k+n	0	0	-2	12	16	-35	-24	-60	-68	-18
k-n	-2	2	0	18	24	-21	-40	-30	-76	-30
k×n	-1	-1	1	-45	-80	196	-256	675	-288	-144
k:n	-1	-1	1	-5	-5	-4	-4	3	-18	-4

Ifodaning son qiymatini toping:

1) (-36) × (-4):(-9) × (-2); 3) (-49) × 8:(-7) × 4;

2) (-42) × (-14):(-7) × 4; 4) (-125) × 15:(-25) × (-3).

864:18=48 ekanidan foydalanib, quyidagi ifodaning son qiymatini toping:

1) -864:18=-48; 2) -48 × 18=-864; 3) 864:(-48)=-18; 4) 864:(-18)=-48.

Quydagi sonlarni ikkita butun sonning bo’linmasi (nisbati) ko’rinishda tasvirlang:

1; 5; -10; -3; -7; -15; 18; 40; 0; -12; 5; -40.

Namuna:

Amallarni bajaring:

1) (-85):(-17)+(-24) × (-2)-(-96):4;

2) (-70):(-2)-(-48):4+36:(-9).

Jadvalni to’ldiring:

k	6	18	-12	-15	9	21	27	-45
n	-4	-16	-8	-20	14	36	30	22
k:(-3)+n:(-2)

5. Darsga yakun yasash va baholash – darsning maqsadini yana bir bor eslatish va unga qanchalik erishilganligini o’quvchilar bilan birgalikda aniqlash. O’quvchilarning mavzu bo’yicha savollariga javob berish, ulaming o’zlashtirganlik darajasini aniqiash, darsning asosiy lahzalarini qayd qilish. Darsda faol qatnashgan o’quvchilarni tilga olish va baholash;
6. Uyga vazifa ________________________

O’IBDO’ J.Yunusaliyev