# What is 1/9 + 1/10? getcalc.com's two fractions addition calculator is an online basic math function tool to find what's the equivalent fraction for sum of two fractional numbers with different, unequal or unlike denominators 1/9 and 1/10.

1/9 + 1/10 = 19/90 in fraction form

1/9 + 1/10 = 0.2111 in decimal form
This calculator, formula, step by step calculation and associated information for adding 1/9 and 1/10 may help students, teachers, parents or professionals to learn, teach, practice or verify such two fractions addition calculations efficiently.

## How to Find Equivalent Fraction for 1/9+1/10?

The below workout with step by step calculation shows how to find the equivalent fraction between 1/9 and 1/10 by adding two fractions with different, unequal or unlike denominators. The sum in fraction form for 1/9 plus 1/10 can be obtained by using anyone of the two methods below.
1. LCM method
2. Cross multiplication method.

Problem and Workout - LCM Method
What is 1/9 plus 1/10 as a fraction by addition using LCM method?

step 1 Address formula, input parameters and values.
Input parameters and values:
1/9 & 1/10
1/9+1/10 = ?

step 2 For unequal denominators, find the LCM (least common multiple) for both denominators
The LCM for 9 and 10 is 90.

step 3 To have the common denominator, multiply the LCM with both numerator and denominator
=(1 x 90)/(9 x 90)+(1 x 90)/(10 x 90)
=10/90+9/90
=(10 + 9)/90

step 4 Add both numerator and rewrite it in a single form.
=19/90
1/9+1/10=19/90

By using LCM method, 19/90 is the equivalent fraction by adding 1/9 and 1/10.

Problem and Workout - Cross Multiplication Method
step 1 Address formula and input values.
Input values:
1/9 & 1/10
1/9 + 1/10 = ?

step 2 Cross multiply both numerator and denominator, multiply both denominators and rewrite as below
= (1 x 10) + (1 x 9)/(9 x 10)

step 3 Simplify and rewrite the fraction
= (10 + 9)/90
1/9+1/10 = 19/90
By using cross multiplication method, 19/90 is the addition between two fractions 1/9 and 1/10. 