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1. Конкурсна робота «Ерудит»
в номінації «Математика»
уч___________ 3-А класу
Первомайської гімназії №3
____________________________________________
1. У Тетянки було одне ціле яблуко, дві половинки і чотири четвертинки. Скільки
всього яблук було у Тетянки?____________
2. Ти та я, та ми з тобою. Скільки нас всього? ____________
3. Скільки людей тягнуло ріпку в казці? _________________
4. Двоє хлопчиків грали в шахмати 4 години. Скільки часу грав кожен з
них?_______________________________________
5. На одній руці 5 пальців, на двох руках 10 пальців. Скільки пальців на 10 руках?
_____________________________________
6. Продовж ряди чисел. Запиши ще 3 числа.
1, 3, 5, 7 ___________________________________________
3 ,6, 9, 12 ___________________________________________
7. Шість стовпів для огорожі ділянки розміщено в один ряд. Відстань між двома
сусідніми стовпами 5 м. Скільки метрів становить відстань між крайніми стовпами?
________________
8. Запишіть усі трицифрові числа, використовуючи цифри 7, 0 і 9, щоб жодна цифра у
кожному з чисел не повторювалася.
_____________________________________________________
9. Контрольну роботу з математики в класі на «9» не написав ніхто. Івась, Тарас та
Оля отримали різні оцінки. Івась одержав не «10». Оля не «10» і не «12». Хто яку оцінку
отримав?
____________________________________________________________________________
____________________________________
10. З 25 учнів у класі 17 ходять на танці, а 15 – на спортивні секції. Скільки
учнів ходять і на танці, і на спортивні секції?
_________________________________________________________________________
__________________________
11. В двох залах 50 стільців. Коли з одного зала 10 стільців винесли, то в залах
стільців залишилося порівну. Скільки стільців було в кожному залі спочатку?
____________________________________________________________________________
____________________________________________________________________________
_____________
12. Саша вирішив прогулятися і пішов по лівому березі струмка. Під час прогулянки
він три рази переходив цей струмок. На лівому чи на правому березі він зараз?
__________________________________________________
13. В селі Простоквашино на лаві перед будинком сидить дядя Федір, кіт Матроскін,
пес Шарик і почтальон Печкін. Якщо пес Шарик, який сидить крайнім зліва, сяде між
котом Матроскіним та дядьком Федором, то дядько Федір буде крайнім зліва. Хто де
сидить?
__________________________________________________________________________
_________________________________
14. Які числа при читанні не змінюються навіть, якщо їх перевернути?
__________________________________________
2. 15. Розшифруй комбінацію кодового замка:
а) третя цифра на 3 більше, ніж перша;
б ) друга цифра на 2 більше, ніж четверта;
в) сума всіх цифр дорівнює 17,
г) друга цифра 3.
____________________________________________________
16. Вік дідуся записується найменшим трицифровим числом,у якого всі цифри різні.
Скільки років дідусеві?
_________________________________________________
17. Кілька дівчаток і один хлопчик стоять в хороводі. Даша стоїть від Кості
четвертою, з якого б боку ми не рахували. Скільки стоїть дітей в хороводі?
______________________
18. Валя та Дмитрик важуть стільки ж, скільки Боря та Володя. Дмитрик важить 32
кг., Боря 40 кг. Хто важчий: Валя или Володя? _______________________________
19. У господарки 3 кози. Кожна коза з’їдає по 2 кочана капусти. Від кожної
капустини коза дає 3 стакана молока. Скільки стаканів молока дають господарці
кози? _________________________________________________
