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Tekstist avaldise / võrrandi koostamine

Mathematics

7th Grade

10 Questions

Used 30+ times

Tekstist avaldise / võrrandi koostamine
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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Arvu x korrutati 6-ga, tulemusele liideti arvude x ja 9 summa ning saadi 44.

6x = x+ 9 +44

6(x + 9) = 44

6x + (x + 9) = 44

6x + x + 9 = 44

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Arvust 42 lahutati arv y, saadud tulemust korrutati 3-ga ning saadi 96.

(42 - y) 3 = 96

42 - y = 3 * 96

42 - 3y = 96

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Üks arv on teisest 6 korda suurem ja nende arvude vahe on 120.

6x + x = 120

6x - x = 120

6 + x + x = 120

6 - x + x = 120

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Otsitava arvu x ja temast 5 võrra väiksema arvude summa on 19.

x + 5x = 19

x - 5x = 19

x + x - 5 = 19

x + (x - 5) = 19

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Arv jagati 3-ga ja tulemusele liideti 16. Saadi 25.

a : 3 + 16 = 25

16 : 3 = 25a

a3 + 16 = 25

3 : a + 16 = 25

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Kolm järjestikust täisarvu liidetakse ja saadetakse 120.

x + x + 1 + x + 2 = 120

x + 2x + 3x = 120

x + (x + 1) + (x + 2) = 120

x + 1 + 2 = 120

7.

MULTIPLE SELECT QUESTION

30 sec • 1 pt

Leia kaks arvu, kui on teada, et nende summa on 42 ja üks arv on teisest 5 korda suurem.

42x = 5

5x + x = 42

x = 42 * 5

x + 5x = 42

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