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Võrrandi koostamine

Authored by Merle Müür

Mathematics

8th Grade

Used 4+ times

Võrrandi koostamine
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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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