Notation sigma

Notation sigma

11th - 12th Grade

7 Qs

quiz-placeholder

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Notation sigma

Notation sigma

Assessment

Quiz

Mathematics

11th - 12th Grade

Practice Problem

Medium

CCSS
7.EE.A.1

Standards-aligned

Created by

Julie Tremblay

Used 4+ times

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7 questions

Show all answers

1.

FILL IN THE BLANK QUESTION

30 sec • 1 pt

Si  i=1nai=20\sum_{i=1}^na_i=20  et  i=1nbi=4\sum_{i=1}^nb_i=4  , calculer  i=1n(ai2bi)\sum_{i=1}^n\left(a_i-2b_i\right) .

Tags

CCSS.7.EE.A.1

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Sachant que  i=1nai=10\sum_{i=1}^na_i=10 , calculer i=0nai\sum_{i=0}^na_i .

9

10

11

 a0+10a_0+10  

3.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

 2+5+8+11+14+17+202+5+8+11+14+17+20 
peut aussi s'écrire comme :

 k=06(3k+2)\sum_{k=0}^6\left(3k+2\right)  

 k=17(3k2)\sum_{k=1}^7\left(3k-2\right)  

 k=172k\sum_{k=1}^72k  

 k=06(3k1)\sum_{k=0}^6\left(3k-1\right)  

4.

FILL IN THE BLANK QUESTION

30 sec • 1 pt

Si ai=2a_i=2 , calculer i=1104ai\sum_{i=1}^{10}4a_i .

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Trouver l'expression équivalente à la somme suivante.

 i=725ai\sum_{i=7}^{25}a_i  

 i=125aii=16ai\sum_{i=1}^{25}a_i-\sum_{i=1}^6a_i  

 i=125aii=17ai\sum_{i=1}^{25}a_i-\sum_{i=1}^7a_i  

 i=118ai\sum_{i=1}^{18}a_i  

 i=125ai+i=16ai\sum_{i=1}^{25}a_i+\sum_{i=1}^6a_i  

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Calculer la somme suivante.

 i=1ni\sum_{i=1}^ni  

 n(n+1)2\frac{n\left(n+1\right)}{2}  

 (n(n+1)2)2\left(\frac{n\left(n+1\right)}{2}\right)^2  

 n(n1)2\frac{n\left(n-1\right)}{2}  

 n(n+1)6\frac{n\left(n+1\right)}{6}  

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Calculer la somme suivante.

 i=1ni2\sum_{i=1}^ni^2  

 n(n+1)(2n+1)6\frac{n\left(n+1\right)\left(2n+1\right)}{6}  

 (n(n+1)2)2\left(\frac{n\left(n+1\right)}{2}\right)^2  

 n(n+1)(2n1)6\frac{n\left(n+1\right)\left(2n-1\right)}{6}  

 n(n+1)6\frac{n\left(n+1\right)}{6}  

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