How do you solve decimal number system base 10

The decimal number system, also known as base 10, is the most common number system we use daily. It uses ten unique digits: 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9. Each digit's position in a number determines its value, which is a power of 10.

For example, in the number 345:

• The digit 5 is in the units place ($10^0 = 1$), so its value is $5 \times 1 = 5$.
• The digit 4 is in the tens place ($10^1 = 10$), so its value is $4 \times 10 = 40$.
• The digit 3 is in the hundreds place ($10^2 = 100$), so its value is $3 \times 100 = 300$.

Thus, $345 = 300 + 40 + 5$.