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8th - 9th Grade

30 Qs

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Assessment

Quiz

Mathematics, Chemistry

8th - 9th Grade

Practice Problem

Medium

Created by

Eric Ngwa

Used 2+ times

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30 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

 Simplify: 3x2  4x5Simplify:\ 3x^2\ \cdot\ 4x^5  

 7x77x^7  

 12x712x^7  

 7x107x^{10}  

 12x1012x^{10}  

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

 Simplify: 3×102  4×105Simplify:\ 3\times10^2\ \cdot\ 4\times10^5  

 7×1077\times10^7  

 12×101012\times10^{10}  

 7×10107\times10^{10}  

 12×10712\times10^7  

3.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Solve:

(2.1×10​2​​) × (3.0×10​4)

5.1 x 102

6.3 x 106

5.1 x 106

6.3 x 108

4.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Find the product. Write your answer in proper scientific notation.

(5 x 106)(3 x 108)

15 x 1014

1.5 x 1014

1.5 x 1015

1.5 x 1013

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

 Simplify: 6x82x4Simplify:\ \frac{6x^8}{2x^4}  

 3x43x^4  

 4x44x^4  

 3x23x^2  

 4x24x^2  

6.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

(8 x 1055) ÷ (2 x 1052)

6 x 103

4 x 103

4 x 10107

4 x 1055

7.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Solve:
 (9×106)(3×103)\frac{(9\times10^{-6})}{(3\times10^{-3})}  

 27×10927\times10^{-9}  

 3×1033\times10^{-3}  

 3×1093\times10^{-9}  

 27×10327\times10^{-3}  

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