Calcula y simplifica cuando sea posible: ( 5 3 ⋅ ( − 6 7 ) ) : 5 7 = \left(\frac{5}{3}\cdot\left(-\frac{6}{7}\right)\right):\frac{5}{7}= ( 3 5 ⋅ ( − 7 6 ) ) : 7 5 =

− 50 49 -\frac{50}{49} − 4 9 5 0

− 91 24 -\frac{91}{24} − 2 4 9 1

Calcula y simplifica cuando sea posible: ( 5 2 + 3 4 ) ⋅ 7 6 = \left(\frac{5}{2}+\frac{3}{4}\right)\cdot\frac{7}{6}= ( 2 5 + 4 3 ) ⋅ 6 7 =

− 50 49 -\frac{50}{49} − 4 9 5 0

− 91 24 -\frac{91}{24} − 2 4 9 1

Calcula el máximo común divisor (mcd) y el mínimo común múltiplo (mcm) de 280 y 84

mcd (280 , 84) = 28 mcm (280 , 84) = 840

mcd (280 , 84) = 840 mcm (280 , 84) = 28

mcd (280 , 84) = 28 mcm (280 , 84) = 520

mcd (280 , 84) = 840 mcm (280 , 84) =32

mcd (280 , 84) = 32 mcm (280 , 84) = 840

Calcula expresando previamente los números decimales en forma de fracción: 12 5 + 8 6 − 0 , 92 = \frac{12}{5}+\frac{8}{6}-0,92= 5 1 2 + 6 8 − 0 , 9 2 =

211 75 \frac{211}{75} 7 5 2 1 1

Calcula 8 − 3 32 + 4 2 \sqrt{8}-3\sqrt{32}+4\sqrt{2} 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"> − 3 3 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"> + 4 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">

− 6 2 -6\sqrt{2} − 6 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">

2 − 22 2\sqrt{-22} 2 − 2 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">

− 1 2 -1\sqrt{2} − 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">

2 42 2\sqrt{42} 2 4 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">

repaso matemáticas 2º eso

Authored by Miguel Ángel cubiles cordón

Mathematics

8th Grade

CCSS covered

Used 4+ times

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48 questions

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MULTIPLE CHOICE QUESTION

45 sec • 1 pt

3,424242...es un número decimal

Exacto

Periódico puro

Periódico mixto

Irracional (no periódico y no exacto)

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

3,424343...es un número decimal

Exacto

Periódico puro

Periódico mixto

Irracional (no periódico y no exacto)

MULTIPLE CHOICE QUESTION

1 min • 1 pt

El m.c.d.(9, 36) es ...

324

MULTIPLE CHOICE QUESTION

1 min • 1 pt

El m.c.m. de 9 y 36 es....

324

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Expresiones algebraicas (lenguaje algebraico):Si la edad de un alumno es x , expresa algebraicamente su edad dentro de 7 años

x + 7

x⁷

7^x

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Expresiones algebraicas (lenguaje algebraico): Expresa "el doble de la suma de dos números distintos"

2 (x+ y)

2 (a+a)

(x+ x)²

2x + x

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Expresiones algebraicas (lenguaje algebraico):
Elige la frase que explica la siguiente expresión algebraica (m - n )²

La diferencia de dos números elevada al cuadrado

La diferencia de los cuadrados de dos números

El cubo de una resta

La resta de dos números consecutivos elevada al cuadrado

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