Considera o conjunto A = { − 7 , 3 2 , − 7 9 , π , 10 } A=\left\{-\sqrt{7}\ ,\ \frac{3}{2}\ ,\ -\frac{7}{9}\ ,\ \pi\ ,\ \sqrt{10}\ \right\} A = { − 7 <path d="M95,702c-2.7,0,-7.17,-2.7,-13.5,-8c-5.8,-5.3,-9.5, -10,-9.5,-14c0,-2,0.3,-3.3,1,-4c1.3,-2.7,23.83,-20.7,67.5,-54c44.2,-33.3,65.8, -50.3,66.5,-51c1.3,-1.3,3,-2,5,-2c4.7,0,8.7,3.3,12,10s173,378,173,378c0.7,0, 35.3,-71,104,-213c68.7,-142,137.5,-285,206.5,-429c69,-144,104.5,-217.7,106.5, -221c5.3,-9.3,12,-14,20,-14H400000v40H845.2724s-225.272,467,-225.272,467 s-235,486,-235,486c-2.7,4.7,-9,7,-19,7c-6,0,-10,-1,-12,-3s-194,-422,-194,-422 s-65,47,-65,47z M834 80H400000v40H845z"> , 2 3 , − 9 7 , π , 1 0 <path d="M95,702c-2.7,0,-7.17,-2.7,-13.5,-8c-5.8,-5.3,-9.5, -10,-9.5,-14c0,-2,0.3,-3.3,1,-4c1.3,-2.7,23.83,-20.7,67.5,-54c44.2,-33.3,65.8, -50.3,66.5,-51c1.3,-1.3,3,-2,5,-2c4.7,0,8.7,3.3,12,10s173,378,173,378c0.7,0, 35.3,-71,104,-213c68.7,-142,137.5,-285,206.5,-429c69,-144,104.5,-217.7,106.5, -221c5.3,-9.3,12,-14,20,-14H400000v40H845.2724s-225.272,467,-225.272,467 s-235,486,-235,486c-2.7,4.7,-9,7,-19,7c-6,0,-10,-1,-12,-3s-194,-422,-194,-422 s-65,47,-65,47z M834 80H400000v40H845z"> } . Dos elementos de A indica o maior número irracional.

10 \sqrt{10} 1 0 <path d="M95,702c-2.7,0,-7.17,-2.7,-13.5,-8c-5.8,-5.3,-9.5, -10,-9.5,-14c0,-2,0.3,-3.3,1,-4c1.3,-2.7,23.83,-20.7,67.5,-54c44.2,-33.3,65.8, -50.3,66.5,-51c1.3,-1.3,3,-2,5,-2c4.7,0,8.7,3.3,12,10s173,378,173,378c0.7,0, 35.3,-71,104,-213c68.7,-142,137.5,-285,206.5,-429c69,-144,104.5,-217.7,106.5, -221c5.3,-9.3,12,-14,20,-14H400000v40H845.2724s-225.272,467,-225.272,467 s-235,486,-235,486c-2.7,4.7,-9,7,-19,7c-6,0,-10,-1,-12,-3s-194,-422,-194,-422 s-65,47,-65,47z M834 80H400000v40H845z">

− 7 -\sqrt{7} − 7 <path d="M95,702c-2.7,0,-7.17,-2.7,-13.5,-8c-5.8,-5.3,-9.5, -10,-9.5,-14c0,-2,0.3,-3.3,1,-4c1.3,-2.7,23.83,-20.7,67.5,-54c44.2,-33.3,65.8, -50.3,66.5,-51c1.3,-1.3,3,-2,5,-2c4.7,0,8.7,3.3,12,10s173,378,173,378c0.7,0, 35.3,-71,104,-213c68.7,-142,137.5,-285,206.5,-429c69,-144,104.5,-217.7,106.5, -221c5.3,-9.3,12,-14,20,-14H400000v40H845.2724s-225.272,467,-225.272,467 s-235,486,-235,486c-2.7,4.7,-9,7,-19,7c-6,0,-10,-1,-12,-3s-194,-422,-194,-422 s-65,47,-65,47z M834 80H400000v40H845z">

A expressão 3 ( 12 + 3 ) \sqrt{3}\left(\sqrt{12}+\sqrt{3}\right) 3 <path d="M95,702c-2.7,0,-7.17,-2.7,-13.5,-8c-5.8,-5.3,-9.5, -10,-9.5,-14c0,-2,0.3,-3.3,1,-4c1.3,-2.7,23.83,-20.7,67.5,-54c44.2,-33.3,65.8, -50.3,66.5,-51c1.3,-1.3,3,-2,5,-2c4.7,0,8.7,3.3,12,10s173,378,173,378c0.7,0, 35.3,-71,104,-213c68.7,-142,137.5,-285,206.5,-429c69,-144,104.5,-217.7,106.5, -221c5.3,-9.3,12,-14,20,-14H400000v40H845.2724s-225.272,467,-225.272,467 s-235,486,-235,486c-2.7,4.7,-9,7,-19,7c-6,0,-10,-1,-12,-3s-194,-422,-194,-422 s-65,47,-65,47z M834 80H400000v40H845z"> ( 1 2 <path d="M95,702c-2.7,0,-7.17,-2.7,-13.5,-8c-5.8,-5.3,-9.5, -10,-9.5,-14c0,-2,0.3,-3.3,1,-4c1.3,-2.7,23.83,-20.7,67.5,-54c44.2,-33.3,65.8, -50.3,66.5,-51c1.3,-1.3,3,-2,5,-2c4.7,0,8.7,3.3,12,10s173,378,173,378c0.7,0, 35.3,-71,104,-213c68.7,-142,137.5,-285,206.5,-429c69,-144,104.5,-217.7,106.5, -221c5.3,-9.3,12,-14,20,-14H400000v40H845.2724s-225.272,467,-225.272,467 s-235,486,-235,486c-2.7,4.7,-9,7,-19,7c-6,0,-10,-1,-12,-3s-194,-422,-194,-422 s-65,47,-65,47z M834 80H400000v40H845z"> + 3 <path d="M95,702c-2.7,0,-7.17,-2.7,-13.5,-8c-5.8,-5.3,-9.5, -10,-9.5,-14c0,-2,0.3,-3.3,1,-4c1.3,-2.7,23.83,-20.7,67.5,-54c44.2,-33.3,65.8, -50.3,66.5,-51c1.3,-1.3,3,-2,5,-2c4.7,0,8.7,3.3,12,10s173,378,173,378c0.7,0, 35.3,-71,104,-213c68.7,-142,137.5,-285,206.5,-429c69,-144,104.5,-217.7,106.5, -221c5.3,-9.3,12,-14,20,-14H400000v40H845.2724s-225.272,467,-225.272,467 s-235,486,-235,486c-2.7,4.7,-9,7,-19,7c-6,0,-10,-1,-12,-3s-194,-422,-194,-422 s-65,47,-65,47z M834 80H400000v40H845z"> ) representa o número:

45 \sqrt{45} 4 5 <path d="M95,702c-2.7,0,-7.17,-2.7,-13.5,-8c-5.8,-5.3,-9.5, -10,-9.5,-14c0,-2,0.3,-3.3,1,-4c1.3,-2.7,23.83,-20.7,67.5,-54c44.2,-33.3,65.8, -50.3,66.5,-51c1.3,-1.3,3,-2,5,-2c4.7,0,8.7,3.3,12,10s173,378,173,378c0.7,0, 35.3,-71,104,-213c68.7,-142,137.5,-285,206.5,-429c69,-144,104.5,-217.7,106.5, -221c5.3,-9.3,12,-14,20,-14H400000v40H845.2724s-225.272,467,-225.272,467 s-235,486,-235,486c-2.7,4.7,-9,7,-19,7c-6,0,-10,-1,-12,-3s-194,-422,-194,-422 s-65,47,-65,47z M834 80H400000v40H845z">

108 \sqrt{108} 1 0 8 <path d="M95,702c-2.7,0,-7.17,-2.7,-13.5,-8c-5.8,-5.3,-9.5, -10,-9.5,-14c0,-2,0.3,-3.3,1,-4c1.3,-2.7,23.83,-20.7,67.5,-54c44.2,-33.3,65.8, -50.3,66.5,-51c1.3,-1.3,3,-2,5,-2c4.7,0,8.7,3.3,12,10s173,378,173,378c0.7,0, 35.3,-71,104,-213c68.7,-142,137.5,-285,206.5,-429c69,-144,104.5,-217.7,106.5, -221c5.3,-9.3,12,-14,20,-14H400000v40H845.2724s-225.272,467,-225.272,467 s-235,486,-235,486c-2.7,4.7,-9,7,-19,7c-6,0,-10,-1,-12,-3s-194,-422,-194,-422 s-65,47,-65,47z M834 80H400000v40H845z">

Determina dois números naturais, a e b, tais que a fração a b \frac{a}{b} b a seja igual à dízima infinita periódica 0,(54) .

a = 54 ; b = 99 a=54\ \ \ ;\ \ \ b=99 a = 5 4 ; b = 9 9

a = 54 ; b = 100 a=54\ \ \ ;\ \ \ b=100 a = 5 4 ; b = 1 0 0

a = 5 ; b = 4 a=5\ \ \ ;\ \ \ b=4 a = 5 ; b = 4

a = 5 ; b = 11 a=5\ \ \ ;\ \ \ b=11 a = 5 ; b = 1 1

Qual opção abaixo não é um número racional?

5 \sqrt{5} 5 <path d="M95,702c-2.7,0,-7.17,-2.7,-13.5,-8c-5.8,-5.3,-9.5, -10,-9.5,-14c0,-2,0.3,-3.3,1,-4c1.3,-2.7,23.83,-20.7,67.5,-54c44.2,-33.3,65.8, -50.3,66.5,-51c1.3,-1.3,3,-2,5,-2c4.7,0,8.7,3.3,12,10s173,378,173,378c0.7,0, 35.3,-71,104,-213c68.7,-142,137.5,-285,206.5,-429c69,-144,104.5,-217.7,106.5, -221c5.3,-9.3,12,-14,20,-14H400000v40H845.2724s-225.272,467,-225.272,467 s-235,486,-235,486c-2.7,4.7,-9,7,-19,7c-6,0,-10,-1,-12,-3s-194,-422,-194,-422 s-65,47,-65,47z M834 80H400000v40H845z">

0 , 25 \sqrt{0,25} 0 , 2 5 <path d="M263,681c0.7,0,18,39.7,52,119c34,79.3,68.167, 158.7,102.5,238c34.3,79.3,51.8,119.3,52.5,120c340,-704.7,510.7,-1060.3,512,-1067 c4.7,-7.3,11,-11,19,-11H40000v40H1012.3s-271.3,567,-271.3,567c-38.7,80.7,-84, 175,-136,283c-52,108,-89.167,185.3,-111.5,232c-22.3,46.7,-33.8,70.3,-34.5,71 c-4.7,4.7,-12.3,7,-23,7s-12,-1,-12,-1s-109,-253,-109,-253c-72.7,-168,-109.3, -252,-110,-252c-10.7,8,-22,16.7,-34,26c-22,17.3,-33.3,26,-34,26s-26,-26,-26,-26 s76,-59,76,-59s76,-60,76,-60z M1001 80H40000v40H1012z">

Qual das seguintes afirmações é verdadeira?

− 3 ∈ I N -3\in IN − 3 ∈ I N

1 2 ∈ Z \frac{1}{2}\in Z 2 1 ∈ Z

1 , ( 57 ) ∉ I R 1,\left(57\right)\notin IR 1 , ( 5 7 ) ∈ / I R

Qual dos números é inteiro?

16 \sqrt{16} 1 6 <path d="M 95 702 c -2.7 0 -7.17 -2.7 -13.5 -8 c -5.8 -5.3 -9.5 -10 -9.5 -14 c 0 -2 0.3 -3.3 1 -4 c 1.3 -2.7 23.83 -20.7 67.5 -54 c 44.2 -33.3 65.8 -50.3 66.5 -51 c 1.3 -1.3 3 -2 5 -2 c 4.7 0 8.7 3.3 12 10 s 173 378 173 378 c 0.7 0 35.3 -71 104 -213 c 68.7 -142 137.5 -285 206.5 -429 c 69 -144 104.5 -217.7 106.5 -221 c 5.3 -9.3 12 -14 20 -14 H 400000 v 40 H 845.272 s -225.272 467 -225.272 467 s -235 486 -235 486 c -2.7 4.7 -9 7 -19 7 c -6 0 -10 -1 -12 -3 s -194 -422 -194 -422 s -65 47 -65 47 Z M 834 80 H 400000 v 40 H 845 Z" />

2 \sqrt{2} 2 <path d="M 95 702 c -2.7 0 -7.17 -2.7 -13.5 -8 c -5.8 -5.3 -9.5 -10 -9.5 -14 c 0 -2 0.3 -3.3 1 -4 c 1.3 -2.7 23.83 -20.7 67.5 -54 c 44.2 -33.3 65.8 -50.3 66.5 -51 c 1.3 -1.3 3 -2 5 -2 c 4.7 0 8.7 3.3 12 10 s 173 378 173 378 c 0.7 0 35.3 -71 104 -213 c 68.7 -142 137.5 -285 206.5 -429 c 69 -144 104.5 -217.7 106.5 -221 c 5.3 -9.3 12 -14 20 -14 H 400000 v 40 H 845.272 s -225.272 467 -225.272 467 s -235 486 -235 486 c -2.7 4.7 -9 7 -19 7 c -6 0 -10 -1 -12 -3 s -194 -422 -194 -422 s -65 47 -65 47 Z M 834 80 H 400000 v 40 H 845 Z" />

∣ − 1.2 ∣ \left|-1.2\right| ∣ − 1 . 2 ∣

Qual a afirmação correta?

3 5 ∈ Q \frac{3}{5}\in Q 5 3 ∈ Q

10 ∈ Z \sqrt{10}\in Z 1 0 <path d="M95,702c-2.7,0,-7.17,-2.7,-13.5,-8c-5.8,-5.3,-9.5, -10,-9.5,-14c0,-2,0.3,-3.3,1,-4c1.3,-2.7,23.83,-20.7,67.5,-54c44.2,-33.3,65.8, -50.3,66.5,-51c1.3,-1.3,3,-2,5,-2c4.7,0,8.7,3.3,12,10s173,378,173,378c0.7,0, 35.3,-71,104,-213c68.7,-142,137.5,-285,206.5,-429c69,-144,104.5,-217.7,106.5, -221c5.3,-9.3,12,-14,20,-14H400000v40H845.2724s-225.272,467,-225.272,467 s-235,486,-235,486c-2.7,4.7,-9,7,-19,7c-6,0,-10,-1,-12,-3s-194,-422,-194,-422 s-65,47,-65,47z M834 80H400000v40H845z"> ∈ Z

π ∉ R \pi\notin R π ∈ / R

Números Reais

Authored by Raul Carneiro

Mathematics

8th - 9th Grade

Used 76+ times

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Considera o conjunto $A=\left\{-\sqrt{7}\ ,\ \frac{3}{2}\ ,\ -\frac{7}{9}\ ,\ \pi\ ,\ \sqrt{10}\ \right\}$ . Dos elementos de A indica o maior número irracional.

$\pi$

$\sqrt{10}$

$\frac{7}{2}$

$-\sqrt{7}$

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Relativamente à medida da diagonal de um quadrado com 1 cm de lado podemos afirmar que:

É superior a 1,5 cm

É igual a 1,41 cm

É inferior a 1,42 cm

É igual a 2 cm

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Podemos afirmar que:

Todo o número real é inteiro.

Todas as dízimas infinitas são números irracionais.

Todo o número natural é real.

Há números irracionais que são fracionários.

MULTIPLE CHOICE QUESTION

$\sqrt{25};\ \pi$

$\sqrt{4};\sqrt{81}$

$\sqrt{3};\sqrt{81}$

$\sqrt{3};\pi$

10.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Apenas um dos quatro números que se seguem é um número irracional. Qual?

$\sqrt{\frac{1}{16}}$

$\sqrt{0,16}$

$\frac{1}{16}$

$\sqrt{1,16}$

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Números Reais

Considera o conjunto A={−7 , 32 , −79 , π , 10 }A=\left\{-\sqrt{7}\ ,\ \frac{3}{2}\ ,\ -\frac{7}{9}\ ,\ \pi\ ,\ \sqrt{10}\ \right\}A={−7​ , 23​ , −97​ , π , 10​ } . Dos elementos de A indica o maior número irracional.

Relativamente à medida da diagonal de um quadrado com 1 cm de lado podemos afirmar que:

Podemos afirmar que:

A expressão 3(12+3)\sqrt{3}\left(\sqrt{12}+\sqrt{3}\right)3​(12​+3​) representa o número:

Classifica em V (verdadeiro) ou F (falso) as seguintes afirmações:I - Todo número inteiro é também um número natural.II - A razão entre dois números inteiros não nulos é um número racional.III - O inverso de +2 é -2

Qual dos seguintes números pode ser representado por uma dízima infinita não periódica?

Determina dois números naturais, a e b, tais que a fração ab\frac{a}{b}ba​ seja igual à dízima infinita periódica 0,(54) .

Qual dos números seguintes está entre −0,04 e −0,03?

Qual das opções seguintes apresenta dois números irracionais?

Apenas um dos quatro números que se seguem é um número irracional. Qual?

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Discover more resources for Mathematics

Considera o conjunto $A=\left\{-\sqrt{7}\ ,\ \frac{3}{2}\ ,\ -\frac{7}{9}\ ,\ \pi\ ,\ \sqrt{10}\ \right\}$ . Dos elementos de A indica o maior número irracional.

A expressão $\sqrt{3}\left(\sqrt{12}+\sqrt{3}\right)$ representa o número:

Classifica em V (verdadeiro) ou F (falso) as seguintes afirmações:
I - Todo número inteiro é também um número natural.
II - A razão entre dois números inteiros não nulos é um número racional.
III - O inverso de +2 é -2

Determina dois números naturais, a e b, tais que a fração $\frac{a}{b}$ seja igual à dízima infinita periódica 0,(54) .