“Agar siz matematikani juda murakkab deb o’ylasangiz, hayotning qanday murakkab ekanligini bilmas ekansiz”

Dars turi: yangi bilim berish.

Dars jihozi: tarqatmalar, AKT, darslik.

Dars metodi: tushuntirish, savol-javob, “Tez hisoblayman” ta’limiy o’yini.

Tashkiliy qism

• O’quvchilar bilan salomlashish
• Davomatni so’rash
• Uyga berilgan topshiriqni tekshirish

“Agar siz matematikani juda murakkab deb o’ylasangiz, hayotning qanday murakkab ekanligini bilmas ekansiz”

№184

a) (3426+2345)-345=(2345-345)+3426=

=2000+3426=5426

b) (3453+898)-2353=(3453-2353)+898=

=1100+898=1998

d) (6578+1437)-1578=(6578-1578)+1437=

=5000+1437=6437

№185

a) 12478-12378+7934=100+7934=8034

b) 38709+13576-21709=(38709-21709)+

+13576=17000+13576=30576

d) 28676+1111-21776=(28676-21776)+

+1111=6900+1111=8011

e) 41512+13924-23412=(41512-23412)+

+13924=18100+13924=32024

№186

To’g’ri to’rtburchak shaklidagi maktab hovlisining bo’yi 216 m, eni esa bo’yidan 45 m qisqa. Maktab hovlisining perimetrini hisoblang.

Javob:

Maktab hovlisining perimetri 774 m ekan.

Berilgan: Bo’yi__ 216 m

Eni____ ? ,45 m qisqa

Perimetri- ? m

Yechish:

• 216-45=171 (m) eni

Formula:

P=(bo’yi+eni)∙2

2) P=(216+171) ∙2=774 (m)