
Bài 9: BC, BCNN
Quiz
•
Mathematics
•
6th Grade
•
Practice Problem
•
Medium
thithutrang nguyen
Used 4+ times
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9 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
BCNN(10;14;16) là:
24.5.7
2.5.7
24
5.7
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cho biết: 42= 2.3.7; 70=2.5.7 ; 180= 22.32.5.BCNN(42;70;180) là:
22.32.7
22.32.5
22.32. 5.7
2.3.5.7
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Một số tự nhiên a khác 0 nhỏ nhất thỏa mãn a ⋮ 12 và a ⋮ 36 . Khi đó a là:
ƯC(12, 36).
BC(12, 36).
ƯCLN(12, 36).
BCNN(12, 36).
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Bội chung của hai hay nhiều số là gì:
là một tập hợp.
là ước của tất cả các số đó.
là bội của tất cả các số đó.
A, B và C đều đúng.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Mọi số tự nhiên a và b khác 0 ta có:
BCNN(a, b, 1) = a.
BCNN(a, b, 1) = b.
BCNN(a, b, 1) = 1.
BCNN(a, b, 1) = BCNN(a, b).
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cho biết BC(4, 6) = {0; 12; 24; 36; 48; ...}. Hãy cho biết BCNN(4, 6).
BCNN(4,6) = 0.
BCNN(4, 6) = 12.
BCNN(4, 6) = 24.
BCNN(4, 6) = 36.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cho hai số tự nhiên 15 và 25. Tập hợp BC(15, 25) là:
BC(15, 25) = 75.
BC(15, 25) = 0; 75; 150; 225; ...
BC(15, 25) = {0; 75; 150; 225; ...}.
BC(15, 25) = {75}.
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