# Decimal number

Decimal number is system number who have 10 digit numbers, consist of 0, 1, 2, 3, 4, 5, 6, 7, 8 and 9. Decimal number base 10 numeral system, and it's the most used in the system numbers.

Decimal number weights

10

10

10

10

10

etc.

Example 1:

Describe a decimal number 2015 in the system numbers

Completion:

2015

5 → 5 × 10

1 → 1 × 10

0 → 0 × 10

2 → 2 × 10

2015 → 5 + 10 + 0 + 2000 = 2015

Example 2:

Describe a decimal number 1000518 in the system numbers

Completion:

1000518

8 → 8 × 10

1 → 1 × 10

5 → 5 × 10

0 → 0 × 10

0 → 0 × 10

0 → 0 × 10

1 → 1 × 10

1000518 → 8 + 10 + 500 + 0 + 0 + 0 + 1000000 = 1000518.

Decimal number weights

10

^{0}= 1 → first digit, weights one10

^{1}= 10 → second digit, weights ten10

^{2}= 100 → third digit, weights hundred10

^{3}= 1000 → fourth digit, weights thousand10

^{4}= 1000 → fifth digit, weights ten thousandetc.

Example 1:

Describe a decimal number 2015 in the system numbers

Completion:

2015

_{(10)}=

5 → 5 × 10

^{0}= 5

1 → 1 × 10

^{1}= 10

0 → 0 × 10

^{2}= 0

2 → 2 × 10

^{3}= 2000

2015 → 5 + 10 + 0 + 2000 = 2015

Example 2:

Describe a decimal number 1000518 in the system numbers

Completion:

1000518

_{(10)}=

8 → 8 × 10

^{0}= 8

1 → 1 × 10

^{1}= 10

5 → 5 × 10

^{2}= 500

0 → 0 × 10

^{3}= 0

0 → 0 × 10

^{4}= 0

0 → 0 × 10

^{5}= 0

1 → 1 × 10

^{6}= 1000000

1000518 → 8 + 10 + 500 + 0 + 0 + 0 + 1000000 = 1000518.

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