LEAP 2025 Math Grade 8 Chapter 1

1 pt

4.

Which of the following is equal to ${x}^{6}$

A

${\left({x}^{2}\right)}^{2}$

B

${\left({x}^{3}\right)}^{2}$

C

$\left({x}^{3}\right)\times 2$

D

$\left({x}^{2}\right)\times 2$

1 pt

7.

What is the value of ${7}^{-2}\times {7}^{4}$?

A

$\frac{1}{49}$

B

$\frac{7}{49}$

C

$7$

D

$49$

1 pt

9.

Which is equivalent to the expression $8\times 9+{4}^{2}-\left(63\xf77\right)$?

A

1143

B

88

C

79

D

65

1pt

12.

Simplify the following expression. Show your work.$\frac{3\left(8-12\right)\times {2}^{-1}}{\left({5}^{2}-{4}^{2}\right)}\times \frac{3\left(13-8\right)\times {2}^{2}}{7+{5}^{2}}$

1 pt

14.

Lee saw the number shown on his calculator screen.

**6E–5**

on a calculator screen is the same as 6×10–5. Which number represents the number Lee saw?

A

0.00006

B

0.000006

C

–60,000

D

–600,000