3 4 ⋅ ( − 2 ) 5 = \frac{3}{4}·\ \frac{\left(-2\right)}{5}= 4 3 ⋅ 5 ( − 2 ) =

− 3 10 -\frac{3}{10} − 1 0 3

15 − 8 \frac{15}{-8} − 8 1 5

3 3 + 5 3 − 4 3 = 3\sqrt{3}+5\sqrt{3}-4\sqrt{3}= 3 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"> + 5 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"> − 4 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"> =

4 3 4\sqrt{3} 4 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">

4 9 4\sqrt{9} 4 9 <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 3\sqrt{3} 3 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">

9 x + x \sqrt{9x}+\sqrt{x} 9 x <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"> + x <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 x 4\sqrt{x} 4 x <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">

10 x \sqrt{10x} 1 0 x <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 x 3\sqrt{x} 3 x <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">

Fraccions i potències

Authored by Javier Rodríguez

Mathematics

9th Grade

Used 99+ times

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21 questions

Show all answers

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

$\frac{2}{3}+\frac{-4}{3}=$

$-\frac{2}{3}$

$\frac{2}{3}$

$\frac{6}{3}$

$-\frac{6}{3}$

-2

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

$\frac{1}{3\ }+\ \frac{1}{3}+\frac{5}{3}-\frac{4}{3}=$

És molt complicada, no l'acabaré.

$\frac{2}{3}$

$-\frac{3}{3}$

Cap de les altres

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

$\frac{3}{4}·\ \frac{\left(-2\right)}{5}=$

$\frac{15}{-8}$

$\frac{6}{20}$

$-\frac{3}{10}$

Cap de les altres

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

$a^2·a^3=a^x$

x=5

x=6

x=patata

x=2/3

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

$\frac{a^3}{a^5}=\ \frac{a·a·a\ }{a·a·a·a·a}=\frac{1}{a·a}=a^2$

És correcte

No és correcte

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

$a+\frac{2a\ }{3}=$

$\frac{3a}{a}$

$\frac{\ 5a}{3}$

Cap de les altres es correcte.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

$\frac{3}{4}+\frac{2}{5}=\frac{3}{20}+\frac{2}{20}=\frac{5}{20}=\frac{1}{4}$

Sap sumar i simplificar

No sap sumar, però si simplificar

No sap sumar ni simplificar

Sap sumar, però mostra dificultats en la simplificació.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

$\frac{2}{5}-\frac{3}{2}=\frac{15}{10}-\frac{4}{10}=\frac{11}{10}$

És correcte el procediment

No és correcte el procediment

Jo no sé resta llavors no se que dir.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

$\frac{h^2·h^3}{h^5}=1$

No és correcte, és $h^1$

No és correcte, és $h^0$

Si és correcte

No és correcte, és $h^{-10}$

10.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

$\sqrt{a^2}=a^1=0$

No és correcte, perquè no entenc d'on surt

És correcte

És correcte el primer pas, però l'ùltim no.

No és correcte, és $a^{\frac{2}{2}}$

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Fraccions i potències

23+−43=\frac{2}{3}+\frac{-4}{3}=32​+3−4​=

13 + 13+53−43=\frac{1}{3\ }+\ \frac{1}{3}+\frac{5}{3}-\frac{4}{3}=3 1​+ 31​+35​−34​=

34⋅ (−2)5=\frac{3}{4}·\ \frac{\left(-2\right)}{5}=43​⋅ 5(−2)​=

a2⋅a3=axa^2·a^3=a^xa2⋅a3=ax

a3a5= a⋅a⋅a a⋅a⋅a⋅a⋅a=1a⋅a=a2\frac{a^3}{a^5}=\ \frac{a·a·a\ }{a·a·a·a·a}=\frac{1}{a·a}=a^2a5a3​= a⋅a⋅a⋅a⋅aa⋅a⋅a ​=a⋅a1​=a2

a+2a 3=a+\frac{2a\ }{3}=a+32a ​=

34+25=320+220=520=14\frac{3}{4}+\frac{2}{5}=\frac{3}{20}+\frac{2}{20}=\frac{5}{20}=\frac{1}{4}43​+52​=203​+202​=205​=41​

25−32=1510−410=1110\frac{2}{5}-\frac{3}{2}=\frac{15}{10}-\frac{4}{10}=\frac{11}{10}52​−23​=1015​−104​=1011​

h2⋅h3h5=1\frac{h^2·h^3}{h^5}=1h5h2⋅h3​=1

a2=a1=0\sqrt{a^2}=a^1=0a2​=a1=0

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$\frac{2}{3}+\frac{-4}{3}=$

$\frac{1}{3\ }+\ \frac{1}{3}+\frac{5}{3}-\frac{4}{3}=$

$\frac{3}{4}·\ \frac{\left(-2\right)}{5}=$

$a^2·a^3=a^x$

$\frac{a^3}{a^5}=\ \frac{a·a·a\ }{a·a·a·a·a}=\frac{1}{a·a}=a^2$

$a+\frac{2a\ }{3}=$

$\frac{3}{4}+\frac{2}{5}=\frac{3}{20}+\frac{2}{20}=\frac{5}{20}=\frac{1}{4}$

$\frac{2}{5}-\frac{3}{2}=\frac{15}{10}-\frac{4}{10}=\frac{11}{10}$

$\frac{h^2·h^3}{h^5}=1$

$\sqrt{a^2}=a^1=0$