Baholash:
Uyga vazifa: 28-31 masala
4-Mavzu: 5-sinfda o’tilganlarni takrorlash
Darsning maqsadi:
Ta’limiy: O’quvchilarning natural sonlar, yuz va hajmlar, oddir kasrlar, ularni qo’shish, ayirishga doir olgan bilimlarini mustahkamlash
Tarbiyaviy: O`quvchilarni vatanparvarlik ruhida tarbiyalash, komil inson sifatida voyaga yetishiga hissa qo`shish. Ajdodlarimiz buyuk me’rosi bilan o’quvchilarni tanishtirish
Rivojlantiruvchi: O`quvchilarning xotirasini shakllantirish, dunyoqarashini kengaytirish,ularni mantiqiy fikrlashga o’rgatish
Tayanch kompetensiyalar:
Axborot bilan ishlash kompetensiya elementi: mavzu doirasida ko’rsatilgan multimedia ilovalariga ongli munosabat bildirish.
Fanga oid kompetensiyalar: matematik masalarni yechishda tarixiy ma’lumotlarni bilishlari kerak.
Dars turi: olingan bilim, malaka, ko’nikmalarni rivojlantiruvchi
Dars jihozi: darslik, konspekt, ko’rgazmali qurollar, tarqatma materiallar
Tashkiliy qism:
Salomlashish
Navbatchi axborotini tinglash
O’tilgan mavzular yuzasidan savol-javob o’tkazish
Uy vazifalarini tekshirish
Asosiy qism
27-mashq. Qulay usul bilan hisoblang:
1) 21,4 + 8,93 + 71,6 = (21,4 +71,6) +8,93 = 93 + 8, 93 = 101,93;
2) 84,36 + 11,64 + 46,75 = (84,36 + 11,64) + 46,75 = 96 + 46,75 = 142,75;
3) 19,08 + 30,78 + 51,92= (19,08 + 51,92) + 30, 78 = 71 + 30,78 = 101,78;
4) 0,8543 + 3,7689 + 1,1457 = (0,8543 + 1,1457) + 3,7689= 2 + 3, 7689 = 5, 7689;
5) 24,1245 + 5,3755 + 2,045 = (24,1245 + 5,3755) + 2,045 = 29,5 + 2,045= 31,545;
6) 3,0625 + 6,9375 + 15,258 = (3,0625 + 6,9375) +15,258= 10 + 15,258= 25,258;
28-mashq. Qulay usul bilan hisoblang:
1) 7,485 – (3,385 – 0,9)= (7,485-3,385) + 0,9= 4,1 + 0,9 =5;
2) 8,435 – (1,111 + 6,324) = 8,435 – 7, 435 = 1;
3) (14,73-1,73) + 12,55= 15 + 12,55 = 27,55;
4) (29,14+ 15,39) – 28,14= (29,14 -28,14) + 15,39 = 1 + 15,39 = 16,39;
32-masala.
50∙0,4=20 50∙0,4+30∙0,4=20+12=32 50-32=18
33-masala.
1) 60∙0,25=15 2) 60∙0,3=18 3) 60∙0,6=36 4) 60∙1,5=90
5) 60∙2,25=135
0,25
|
0,3
|
0,6
|
1,5
|
2,25
|
15
|
18
|
36
|
90
|
135
|
34-masala. 1) 3) 0,125∙24∙1,6=4,8
5) 0,25∙39,9∙4=39,9
Mustahkamlash
35-masala. 1) 2,71∙12,6+87,4∙2,71=2,71∙(12,6+87,4)=2,71∙100=271
2) (29,3-8,5)∙17,9-20,8∙7,9=20,8∙(10+7,9)- 20,8∙7,9=20,8∙10+20,8∙7,9- 20,8∙7,9=208
3) 3,08∙17,9-3,08∙7,9=3,08∙(17,9-7,9)=3,08∙10=30,8
4) 7,5∙8,7+2,5∙(11,4-2,7)=8,7∙(7,5+2,5)=8,7∙10=87
36-masala. a=14,8; b=7,5; c=12,5;
a+b+c=14,8+7,5+12,5=34,8
S=2∙(ab+bc+ac)=2∙(14,8∙7,5+7,5∙12,5+14,8∙12,5)=2∙(7,5∙(14,8+12,5)+14,8∙12,5)=
=2∙(14,8∙12,5)∙(7,5+1)=2∙185∙8,5=185∙17=3145
V=abc=14,8∙7,5∙12,5=1387,5
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