Question

10. Fill in the blank to make an equal problem 2,165 + ______ + 1,678 = 6,414

Answer 1

2571

Explanation:

Let x be the blank.

2165 + x + 1678 = 6414

3843 + x = 6414 (combine like terms)

x = 2571

Answer 2

2,165 + 2571 + 1,678 = 6,414

Explanation:

We can say;

=> 2,165 + unknown number + 1,678 = 6,414

So let's add like terms first;

=> 3,843 + unknown number = 6,414

=> unknown number = 6,414 - 3,843

=> unknown number = 2571

Hope this helps!