OLIMPIADA NATIONALA  GAZETA MATEMATICA  CLASA  a V a

OLIMPIADA NATIONALA GAZETA MATEMATICA CLASA a V a

5th Grade

20 Qs

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OLIMPIADA NATIONALA  GAZETA MATEMATICA  CLASA  a V a

OLIMPIADA NATIONALA GAZETA MATEMATICA CLASA a V a

Assessment

Quiz

Mathematics

5th Grade

Practice Problem

Hard

Created by

Mita Sarau

Used 3+ times

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20 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

 Ca^te numere naturale de trei cifre de forma abcCâte\ numere\ naturale\ de\ trei\ cifre\ de\ forma\ \overline{abc}   satisfac egalitatea abc cba =297satisfac\ egalitatea\ \overline{abc}\ -\overline{cba\ }=297  

54

36

63

3

2.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

 Rezultatul calcululuii (27210+5201÷51063310)÷(217+595311)este egal cu:Rezultatul\ calcululuii\ \left(2^7\cdot2^{10}+5^{201}\div5^{106}-3\cdot3^{10}\right)\div\left(2^{17}+5^{95}-3^{11}\right)este\ egal\ cu:  

2

1

0

4

3.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

 Daca˘ n2=2(1+2+3+.....+2020)+2021, atunci suma cifrelor lui n este egala cu :Dacă\ n^2=2\cdot\left(1+2+3+.....+2020\right)+2021,\ atunci\ suma\ cifrelor\ lui\ n\ este\ egala\ cu\ :  

2

3

5

6

4.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

 Suma cifrelor numarului N=10+102+103+...+1010 esteSuma\ cifrelor\ numarului\ N=10+10^2+10^3+...+10^{10}\ este  

101

100

1

90

5.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

 Daca˘ a=1+3+5+...+21 Dacă\ a=1+3+5+...+21\    si b=20+18+16+...+2  atunci a+b este egal cusi\ b=20+18+16+...+2\ \ atunci\ a+b\ este\ egal\ cu  



231

132

210

110

6.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

 Numarul numerelor naturale nenule care sunt atat patrate perfecte cat si cuburi perfecte mai mici decat 2021 este Numarul\ numerelor\ naturale\ nenule\ care\ sunt\ atat\ patrate\ perfecte\ cat\ si\ cuburi\ perfecte\ mai\ mici\ decat\ 2021\ este\   

3

4

1

5

7.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

 Fie sirul de numere naturale 2,5,8,11,...Fie\ sirul\ de\ numere\ naturale\ 2,5,8,11,...   Suma dintre al 21 lea cu termenul al 2021lea esteSuma\ dintre\ al\ 21\ -lea\ cu\ termenul\ al\ 2021-lea\ este  



6124

6122

6125

6062

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