Question

What is 4L 710mL - 2L 690 mL

Answer 1

4L - 2L = 2L

710mL - 690mL = 20mL

your final answer is... 2L  20mL

Answer 2

Answer:

$2L$ and $20mL$, or $2020mL$

Step-by-step explanation:

We can solve this problem in two ways:

• Making operations with liters and milliliters separately
• Converting all measurements to the same unit and subtracting

With the fist way:

$4L-2L=2L$

and

$710mL - 690mL= 20mL$

anwer is $2L$ and $20mL$ wich is the same as $2020mL$

With the second way:

Fist conveting everything to mL $4L =4000mL$

thus:

$4L+710mL =4000mL+710mL=4710mL$

and $2L=2000mL$

thus:

$2L+690mL=2000mL+690mL =2690mL$

and then subtracting the two values:

$4710mL - 2690mL= 2020mL$