
Võrrandi koostamine
Authored by Merle Müür
Mathematics
8th Grade
Used 4+ times

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20 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Kahe arvu summa on 35
x - y = 35
x + y = 35
x : y = 35
xy = 35
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Kahe arvu vahe on 12
x : y = 12
x + y = 12
xy = 12
x - y = 12
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Üks arv on teisest 5 korda suurem
a = 5b
a = b + 5
a - 5 = b
a - b = 5
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Oletame, et otsitavad arvud on a ja b.
20 % esimesest arvust ja 15 % teisest arvust annavad summaks 18.
20 a + 15 b = 18
20 x + 15 y = 18
a + b = 35 %
0,2 a + 0,15 b = 18
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Oletame, et esimene arv on x ja teine arv on y.
Kolmekordne esimene arv on 17 võrra suurem kahekordsest teisest.
2x -17 = 3y
3x - 2y = 17
2y - 3x = 17
3x = 2x - 17
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Oletame, et esimene arv on x ja teine arv on y.
Esimene arv on 2 võrra suurem kui 80 % tesest arvust.
x + 2 = 80 y
x - 2 = 80 y
x = 0,8 x -2
x = 0,8 y +2
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Üks arv on teisest 3 korda suurem
a = 3b
a = b + 3
a - 3 = b
a - b = 3
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