1. Kamayuvchi 107 ga, ayirluvchi 83 ga ortsa, ayirma qanday o’zgaradi?

1. Kamayuvchi 107 ga, ayirluvchi 83 ga ortsa, ayirma qanday o’zgaradi?
A) 190 ga o’zgaradi B) 24 ga kamayadi
C) o’zgarmaydi D) 24 ga ortadi
2. Tenglamani yeching: (3279-x)-142=137
A) 2600 B) 3000 C) 4000 D) 3600
3. Uzunligi 38 cm bo’lgan kesma uchta kesmaga bo’lingan. Chetki kesmalarning o’rtalari orasidagi masofa 24 cm ga teng. O’rtadagi kesmaning uzunligini toping.
A) 10 B) 12 C) 14 D) 15
4. Uchburchakning perimetri 80 cm. uning bir tomoni ikkinchisidan 4 cm uzun, uchinchisidan esa 3 cm qisqa . shu uchburchakning tomonlarini aniqlang.
A) 27 cm, 23 cm, 30 cm B) 26 cm, 24 cm, 30 cm
C) 28 cm, 22 cm, 30 cm D) 27 cm, 25 cm, 28 cm
5. Bir nechta sonlarning yig’indisi 7800 ga teng. Agar sonlarning har biriga 19 ni qo’shib yig’indi hisoblansa, u 8009 ga teng bo’ladi. Qo’shiluvchilar soni dastlab nechta bo’lgan?
A) 11 B) 12 C) 10 D) 13
6. Agar a=651+652+…+659 va b=841+842+…+849 bo’lsa, a+b nimaga teng?
A) 14990 B) 13500 C) 1489 D) 14980
7. 1 dan 124 gacha bo’lgan natural sonlar yonma-yon bitta son kabi yozilgan: 123..123124
Necha xonali son hosil bo’ldi?
A) 263 B) 265 C) 264 D) 260
8. Ikki sonning yig’indisi 783 ga teng. Sonlardan biri ikkinchisidan 8 marta kichik. Kichik sonning uchdan bir qismini aniqlang.
A) 28 B) 29 C) 32 D) 33
9. Kvadrat metrda ifodalang: 2 ga 32 ar 75 m²
A) 20032075 m² B) 232075 m² C) 203275 m² D) 23275 m²
10. Kubning barcha qirralari uzunliklari yig’indisi 132 cm ga teng. Kubning sirti yuzini toping.
A) 121 cm² B) 726 cm² C) 132 cm² D) 66 cm²
11. Natural son n ning kasr to’g’ri kasr bo’ladigan barcha qiymatlari yig’indisini hisoblang.
A) 100 B) 99 C) 110 D) 107
12. Amallarni bajaring:
A) B) 4 C) 5 D) 5
13. 17 % i 85 bo’lgan sonni aniqlang.
A) 850 B) 102 C) 500 D) 600
14. 180 ning 0,8 qismiga, 0,3 qismi 90 bo’lgan sonni qo’shing.
A) 171 B) 297 C) 344 D) 444
15. 757575=75+…+75 tenglikning o’ng tomonidagi 75 lar soni nechta?
A) 1011 ta B) 1101 ta C) 111 ta D) 10101