Skip to content
free
K
1
2
practice
Home
Math
English
Science
Social Studies
Contact
Language
English
Español
Sign In
/
College Test Prep
/
GRE
/
Compute with Scientific Notation
Grade Level
GRE
QR.043 Compute with Scientific Notation
0%
Skill Level
🔴 Hard
00:00
Progress to Next Level
25% to Medium
Easy
Medium
Hard
Mastery
100%
A student writes (6.4 × 10^-5) ÷ (8 × 10
2
) = 0.8 × 10^-3. Which correction identifies the error?
A
The exponent -3 is correct; only the coefficient should change to 8.
B
The exponent should first be -7, so the normalized quotient is 8 × 10^-8.
C
The exponents should be multiplied, so the result is 0.8 × 10^-10.
D
The coefficients should be added, so the result is 14.4 × 10^-3.
Submit Answer