中等MATH-NUMB-001
A positive number is written as 4.8 × 10^4. What is its value?
A. 480
B. 4800
C. 48000✓ 答案
D. 480000
解說
10^4 = 10000, and 4.8 × 10000 = 48000. The options 480 and 4800 use 10^2 and 10^3. 480000 uses 10^5.
10^4 = 10000, and 4.8 × 10000 = 48000. The options 480 and 4800 use 10^2 and 10^3. 480000 uses 10^5.