# What is 1/5 - 3/10?

getcalc.com's **two fractions subtraction calculator** is an online basic math function tool to find what's the equivalent fraction for difference between two fractional numbers with different, unequal or unlike denominators 1/5 and 3/10.

1/5 - 3/10 = -5/50 as simplified as -1/10 in fraction form

1/5 - 3/10 = -0.1 in decimal form

This calculator, formula, step by step calculation and associated information to find the difference between 1/5 and 3/10 may help students, teachers,
parents or professionals to learn, teach, practice or verify such two fractions subtraction calculations efficiently.

## How to Find Equivalent Fraction for 1/5-3/10?

The below workout with step by step calculation shows how to find what is the difference between two fractions by subtracting a fraction 3/10 from 1/5. For different, unequal or unlike denominators, use any one of the following methods to find the equivalent fraction for 1/5 minus 3/10.

1. LCM method

2. Cross multiplication method.

__Problem and Workout - LCM Method__

What is 1/5 minus 3/10 as a fraction by subtraction using LCM method?

step 1 Address *formula*, input parameters and values.

Input parameters and values:

1/5 & 3/10

1/5-3/10 = ?

step 2 For unequal denominators, find the LCM (least common multiple) for both denominators

The LCM for 5 and 10 is 10.

step 3 To have the common denominator, multiply the LCM with both numerator and denominator

=(1 x 10)/(5 x 10)-(3 x 10)/(10 x 10)

=2/10-3/10

=(2 - 3)/10

step 4 Find difference between numerators and rewrite it in a single form.

=-1/10

1/5-3/10=-1/10

By using LCM method, **-1/10** is the equivalent fraction by subtracting 3/10 from 1/5.

__Problem and Workout - Cross Multiplication Method__

step 1 Address formula and input values.

Input values:

1/5 & 3/10

1/5 - 3/10 = ?

step 2 Cross multiply both numerator and denominator, multiply both denominators and rewrite as below

= (1 x 10) - (3 x 5)/(5 x 10)

step 3 Simplify and rewrite the fraction

= (10 - 15)/50

= -5/50

= -1/10

1/5-3/10 = -1/10

By using cross multiplication method, **-1/10** is the difference between two fractions 1/5 and 3/10.