Sprawdzian 8 - Wyrażenia algebraiczne i równania
Quiz
•
Mathematics
•
8th Grade
•
Practice Problem
•
Easy
Magdalena Jankowska
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9 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Po uproszczeniu wyrażenia 4(a + 5b) − 3(3b − 2a) otrzymamy:
2a + 11b
10a + 11b
21ab
2a + 17b
2.
OPEN ENDED QUESTION
3 mins • Ungraded
Zapisz wyrażenie t(4t − 3s) + 4s(3t + s) w najprostszej postaci.
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3.
MULTIPLE SELECT QUESTION
3 mins • 1 pt
Rozwiązaniem równania jest liczba:
6
9
27
4.
OPEN ENDED QUESTION
5 mins • Ungraded
Rozwiąż równanie:
a) 8x − 3 = 9 + 4x
b) 4(x + 3) + 5 = 3 - 3x
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5.
MULTIPLE SELECT QUESTION
3 mins • 1 pt
Z równania wynika że:
6 ⋅ (x + 5) = 3 ⋅ 2x
6 ⋅ 3 = 2x ⋅ (x + 5)
12x = 3x + 15
12x = 3x + 5
6.
MULTIPLE SELECT QUESTION
5 mins • 1 pt
Wskaż równanie, które nie ma rozwiązań.
3x − 2(x + 2) = x − 4
3(x − 1) + 1 = 3x − 1
4x + 2(x − 1) = 5x
3x − 4 = 2x + 4
7.
OPEN ENDED QUESTION
5 mins • Ungraded
W szkolnej stołówce na sześciu uczniów przypada 1,5 litra zupy. Ile zupy przypada na siedmiu uczniów?
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8.
OPEN ENDED QUESTION
5 mins • Ungraded
Tabletka musująca Supervit o masie 3000 mg zawiera 14 mg witaminy A. Ile miligramów witaminy A zawiera Supervit o masie 2 g? Wynik zaokrąglij do 1 mg.
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9.
OPEN ENDED QUESTION
5 mins • Ungraded
Ania jest o 7 lat młodsza od Piotra. Za 3 lata będzie od niego 2 razy młodsza. Ile lat ma Piotr?
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