Dacă xz – yz + 100z = 2023 și z = 17, cu x, y, z numere naturale, numărul x – y este egal cu:

ComPer - Matematică, Etapa națională - 2022-2023, Clasa a V-a

Quiz
•
Mathematics
•
5th Grade
•
Hard

Andrei Goron
FREE Resource
17 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
a. 18
b. 19
c. 20
d. 1923
2.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Dacă 10000 = abc cu a, b, c numere naturale, b < 60, c < 60, atunci a + b + c are valoarea:
a. 3
b. 88
c. 76
d. 40
3.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Numărul a = 20192020 + 20202021 + 20212022 + 20222023 are ultima cifră:
a. 0
b. 1
c. 2
d. 3
4.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Volumul unui cub este 343 m3. Muchia cubului este:
a. 9 m
b. 8 m
c. 7 m
d. 3 m
5.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Rezultatul calculului 20232 – 2022 2023 – 2022 este:
a. 1
b. 2022
c. 2023
d. 4 092 529
6.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Un triunghi echilateral cu perimetrul 51 cm are latura egală cu a unui pătrat. Aria pătratului este:
a. 289 cm2
b. 68 cm2
c. 2601 cm2
d. 400 cm2
7.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Media aritmetică a trei numere este 140, iar media aritmetică a primelor două numere este 90. Al treilea număr este:
a. 240
b. 200
c. 100
d. 50
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