Sumwise

What is 21/20 as a Decimal?

21/20 = 1.05

Decimal
1.05
Percentage
105%
Simplified
21/20
Type
improper fraction

How to work it out

  1. Simplify: 21/20 is already in simplest form
  2. Divide the numerator by the denominator: 21 ÷ 20 = 1.05
  3. Check: Work backwards: 1.05 × 20 = 21, which is 21 once rounding is allowed for.

In a spreadsheet: =21/20. Dividing the denominator by the numerator flips the fraction. A bar over (or brackets around) digits means they repeat forever.

What the result means

As a percentage, 21/20 is 105%. It is an improper fraction: as a mixed number it is 1 1/20.

Cooking: a recipe that asks for 21/20 of a cup needs 1.05 cups, about 252 millilitres.

Comparing with nearby fractions

21/20 (1.05) is bigger than 21/21 (1) and smaller than 22/20 (1.1). A bigger denominator means smaller pieces, so with the same numerator the fraction gets smaller.

Related results

Results for nearby numbers
1/20 as a decimal

1/20 = 0.05

2/20 as a decimal

2/20 = 0.1

3/20 as a decimal

3/20 = 0.15

22/20 as a decimal

22/20 = 1.1

20/20 as a decimal

20/20 = 1

The other way round: 20/21 as a decimal

Practice

4/42 as a decimal
Show answer

4/42 = 0.(095238)

29/63 as a decimal
Show answer

29/63 = 0.(460317)

31/57 as a decimal
Show answer

31/57 = 0.(543859649122807017)

37/44 as a decimal
Show answer

37/44 = 0.84(09)

80/71 as a decimal
Show answer

80/71 = 1.(12676056338028169014084507042253521)

33/26 as a decimal
Show answer

33/26 = 1.2(692307)

Calculate another

How answers are calculated and checked: methodology.

Questions

What is 21/20 as a Decimal?

21/20 as a decimal is 1.05. Long-division steps and simplified fraction.

What is 21/20 as a percentage?

105%. Multiply the decimal 1.05 by 100.

What is 21/20 in simplest form?

21/20 is already in simplest form: 21 and 20 have no common factor other than 1.