Yechish. Amallarni bajarish tartibi
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17.NATURAL SONLAR USTIDA TORT AMALGA DOIR MASALALAR YECHISH (2)
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YECHISH. AMALLARNI BAJARISH TARTIBI Sinfda bajariladigan topshiriqlar 1.
Ifodada amallarni bajarish tartibini aniqlang va uning qiymatini toping: a) 78-45+54-49; b) 231+112-223-109; d) 721:7 - 112:8+37∙22; e) 322:23–22–483-9:23; f) 315:(375-24∙15)+98; g) (24∙7-676:13)∙13-238. Namuna: Yuqorida ko‘rilgan 1-, 2-, 3-, 4- misollar. 2. Hisoblang: a) (56-56):342+(289-288)∙122; b) (56+46)∙23+(444-443)∙34. 3. Ifodaning qiymatini toping: a) 48-29+37-19; b) 156+228-193-66; d) 245:7 - 224:16+35∙11; e) 322:23∙70-161∙9:69; f) 315:(162+12∙24-11∙39)+5581; g) (24∙7-377:29)∙(2378:58-38); h) (120+16∙7)∙240:(300-5∙44); i) (372+118∙6):(38∙35-34∙37). 4. Qo‘shish va ayirish xossalariga tayangan holda ifodaning qiymatini qulay usulda hisoblang: a) 348+37+63; b) 54∙4∙25; d) 378+89-78; e) 51∙8+49∙8; f) 427-73-27; g) 125∙65-25∙65. 5.
37+5∙7-3 ifodaga qavslarni imkoni bor hamma holatlarda qo‘ying va hosil bo‘lgan har bir ifodaning qiymatini toping. 6. Ifoda tuzing va uning qiymatini toping: a) 24∙11 ko‘paytma va 96:3 bo‘linmaning yig‘indisi; b) 510 sonidan 236+128 yig‘indining ayirmasi; d) 27+3 yig‘indining 52-22 ayirmaga ko‘paytmasi; e) 31+29 yig‘indining 30 soniga bo‘linmasi. 7. Hisoblang: a) 97+13662:27+36944-43∙809; 2
b) 988+1530:(12∙6-38)∙15; d) 4080-(352719-57837):98+307∙107; e) 40∙(207∙54-793)-270000:18; f) 215∙(368-274)+68∙(127+128); g) (8222-4781):37-(1519-637):42. 8. Amallarni bajaring: a) 703-21∙(361-349); b) 23460:(209-86)∙15; d) 6422-24∙(374:12); e) 2678 : (506-480)+297; f) 77∙(452 - 348) - 99; g) 874-(27∙90-1999); h) (1593 : 27 + 326) ∙ 60; i) 6720 : 12 ∙ 35 - 898. 9. Ifodaning qiymatini toping: a) (410+ 96) ∙ (1010-31 248 : 62) -170 ∙1500; b) (174208 - 208 ∙ (563 + 44)) : 333 + 2079 : 77; d) (18 ∙ 331 - (46 348 + 67 892) : 21) : 14 + 143 ∙ 26; e) (201 ∙ (400 100 - 397 964) + 5386) : 24 - 8154; f) (7470: 18-319) + (2060 - 24 ∙ 45) : 28. 10.
Ifodani soddalashtiring: a) 2a + 612 + 7a + 324; b) 12y + 29y + 781 +219; 11. Avtomobil 240 km yo‘lni 4 soatda bosib o‘tishi kerak edi. Lekin avtomobil tezligi 20 km/soat ga oshirildi. Avtomobil manzilga qancha vaqt oldin yetib keladi? 12.
Ali, Soli va Vali tarozida o‘z vaznlanni o‘lchashdi. Ma'lum bo‘lishicha, Ali bilan Solining vazni birgalikda 55 kg, Soli bilan Valining vazni 58 kg va Ali bilan Valining vazni esa 59 kg ekan. Har bir bolaning vazni qancha ekanligini toping.
1. Ifodada amallarni bajarish tartibini aniqlang, so‘ng uning qiymatini toping: a) 123 - 67 + 231 - 224; b) 445 + 333 - 369 - 206; d) 824 : (399 - 23 ∙ 17) + 98; e) (52 ∙ 9 - 1035 : 45) ∙ 7 - 122. 2. Ifodaning qiymatini toping: a)77-45 + 37-23; b) 456 + 123-239-33; 3
d) (31 ∙ 9 - 754 : 29) ∙ (1323 : 27 - 31); e) (186 + 59 ∙ 6): (19 ∙ 35 - 17 ∙ 37) - 12. 3. Qo‘shish va ayirish xossalanga tayangan holda amallarning balanlish tartibini o‘zgartihng va qulay usulda ifodaning qiymatini hisoblang: a) 56+ 88+44; b) 224 ∙ 4 ∙ 250;
d) 13245 + 8899 – 3245; e) 87 ∙ 33+ 13 ∙ 33; f) 1555 – 234 –766; g) 1199 ∙ 678 – 199 ∙ 678. 4. Ifodani soddalshtihng: a) 11a+ 43 +76a+ 27; b) 332y + 211y + 999 + 677; d) 234+35a+ 725+16a; e) 781 - 455 + 37n + 39n. 5.
Ifodaning qiymatini toping: a) 66 ∙ 24 :22+ 17017 : 17; b) (42 ∙ 25 - 36) : 39 + (800 : 40 - 18) ∙ 12. d) 9 ∙ (1030 -579) + 941; e) 8000 - (398+ 132) ∙ 15; f) (770 - 669) ∙ (546 - 489); g) 136 ∙ (668-588) -404 ∙ 25; h)1540 : 11 + 1890 : 9 + 982; i) 1953 + (17432 – 56 ∙ 223) : 16. 6.
Tenglamani yeching: a) 3x + 5x + 96 = 1568; b) 2y + 7y + 78 = 1581; d) 88 880: 110+x=809; e) 357y-149y-1843 = 11 469; f) 256m - 147m - 1871 =63 747; g) 6871 + p: 121 =7000. 7. Velosipedchilar birinchi kuni 154 km, ikkinchi kuni birinchi kundan 23 km ko‘p, uchinchi kun esa ikkinchi kundan 13 km kam masofani bosib o‘tdilar. Velosipedchilar uch kunda qancha masofa bosib o‘tishgan? 8. Tikuv sexida har biri 30 m dan bo‘lgan 9 to‘p va har biri 40 m dan bo‘lgan 13 to‘p mato boredi. Bu matoning 243 metri ishlatildi. Sexda necha metr mato qoldi? 9.
Sayohatchi bir shahardan ikkinchisiga bormoqchi. U oldin avtomobilda 70 km/soat tezlikda 2 soat yo‘l bosdi. So‘ng piyoda 4 soat 5 km/soat tezlik bilan yurdi. Shunda, ikkinchi shahargacha yana 14 km yo‘l qoldi. Bu shaharlar orasidagi masofa qancha? Download 215.57 Kb. Do'stlaringiz bilan baham: |
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