Ways to Make a Number using Subtraction - within 100

Consider the following options:

66 – 12

49 – 10

71 – 20

78 – 11

Let's identify all the correct ways to make number 51.

First check the difference of all the given options.

66 – 12 = 54
 

49 – 10 = 39
 

71 – 20 = 51

 

78 – 11 = 67
 

Out of all the options, 71 – 20 is the only combination that makes the number 51.

So, 71 – 20 makes the number 51.