Repàs arrels

Repàs arrels

1st Grade

13 Qs

quiz-placeholder

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Repàs arrels

Repàs arrels

Assessment

Quiz

Mathematics

1st Grade

Practice Problem

Medium

CCSS
HSN.RN.A.2

Standards-aligned

Created by

Anonymous Anonymous

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13 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Quan podem sumar i restar arrels?

Sempre, és una operació bàsica

Mai

Només si tenen la mateixa arrel

Només si tenen el mateix coeficient

2.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

 25+ 45  15=2\sqrt{5}+\ 4\sqrt{5}\ -\ 1\sqrt{5}=  

 555\sqrt{5}  

 353\sqrt{5}  

 757\sqrt{5}  

 252\sqrt{5}  

3.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

 58+ 98108=-5\sqrt{8}+\ 9\sqrt{8}-10\sqrt{8}=  

 686\sqrt{8}  

 68-6\sqrt{8}  

 383\sqrt{8}  

 28-2\sqrt{8}  

4.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Si davant l'arrel no hi ha cap número (Ex: 2\sqrt{2}  ), és el mateix que dir que el coeficient és 1? (Ex: 2=12\sqrt{2}=1\sqrt{2}  )

Sí, però només en les positives

No

No, val 0 el coeficient

5.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

 33+5223+2=3\sqrt{3}+5\sqrt{2}-2\sqrt{3}+\sqrt{2}=  

 43+624\sqrt{3}+6\sqrt{2}  

 757\sqrt{5}  

 414\sqrt{1}  

 3+62\sqrt{3}+6\sqrt{2}  

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Quan podem multiplicar i dividir arrels?

Sempre

Mai

Només si tenen el mateix radicand

Només si tenen el mateix coeficient

7.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

 25 34=2\sqrt{5}·\ 3\sqrt{4}=  

 5205\sqrt{20}  

 6156\sqrt{15}  

 595\sqrt{9}  

 6206\sqrt{20}  

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