Why isn't 20 a perfect square?

No whole number can be squared to equal 20.

Because 20 is not a prime number.

Because 20 is not a composite number.

$$\sqrt[]{4}\ $$ Who solved the expression with the correct explanation?

Emily says the answer is 2 because $$2^2=4$$

Richard says the answer is 2 because $$4\div2=2$$

Number Sense Review Quiz

Authored by Karen Cannon

Mathematics

7th Grade

CCSS covered

Used 8+ times

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27 questions

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MATH RESPONSE QUESTION

1 min • 1 pt

$\sqrt[]{2\cdot32}$

$8$

Mathematical Equivalence

MATH RESPONSE QUESTION

1 min • 1 pt

$4\cdot\sqrt[]{25}$

$20$

Mathematical Equivalence

Tags

CCSS.HSN.RN.A.2

MATH RESPONSE QUESTION

1 min • 1 pt

$\sqrt[]{18^2}$

$18$

Mathematical Equivalence

Tags

CCSS.8.EE.A.2

MATH RESPONSE QUESTION

1 min • 1 pt

$\sqrt[]{x^2}$

$x$

Mathematical Equivalence

MATH RESPONSE QUESTION

1 min • 1 pt

$\sqrt[]{21^2}$

$21$

Mathematical Equivalence

Tags

CCSS.HSN.RN.A.2

MATH RESPONSE QUESTION

1 min • 1 pt

$\frac{\sqrt[]{100}}{5}$

$2$

Mathematical Equivalence

MATH RESPONSE QUESTION

1 min • 1 pt

$\frac{\sqrt[]{36}}{\sqrt[]{4}}$

$3$

Mathematical Equivalence

Tags

CCSS.HSN.RN.A.2

MATH RESPONSE QUESTION

1 min • 1 pt

$3\cdot\sqrt[]{49}$

$21$

Mathematical Equivalence

Tags

CCSS.HSN.RN.A.2

MATH RESPONSE QUESTION

1 min • 1 pt

$x^2=81$
What is the value of x?

$9$

Mathematical Equivalence

Tags

CCSS.8.EE.A.2

10.

MATH RESPONSE QUESTION

1 min • 1 pt

$x^2=\ 144$
What is the value of x?

$12$

Mathematical Equivalence

Tags

CCSS.8.EE.A.2

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Number Sense Review

2⋅32\sqrt[]{2\cdot32}2⋅32​

4⋅254\cdot\sqrt[]{25}4⋅25​

182\sqrt[]{18^2}182​

x2\sqrt[]{x^2}x2​

212\sqrt[]{21^2}212​

1005\frac{\sqrt[]{100}}{5}5100​​

364\frac{\sqrt[]{36}}{\sqrt[]{4}}4​36​​

3⋅493\cdot\sqrt[]{49}3⋅49​

x2=81x^2=81x2=81 What is the value of x?

x2= 144x^2=\ 144x2= 144 What is the value of x?

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Popular Resources on Wayground

Discover more resources for Mathematics

$\sqrt[]{2\cdot32}$

$4\cdot\sqrt[]{25}$

$\sqrt[]{18^2}$

$\sqrt[]{x^2}$

$\sqrt[]{21^2}$

$\frac{\sqrt[]{100}}{5}$

$\frac{\sqrt[]{36}}{\sqrt[]{4}}$

$3\cdot\sqrt[]{49}$

$x^2=81$
What is the value of x?

$x^2=\ 144$
What is the value of x?