Question

what should be added to 7 whole 3 upon 5 to get 18​

Answer 1

Break the question down into parts you know how to solve:

What should be added to 7 35 to get 8 ?

What should be added to 8 to get 18 ?

Let’s look at each question:

What should be added to 7 35 to get 8 ?

Since 8 is equal to 7 55 , we could ask ourselves:

What should be added to 35 to get 55

7 35 + 25 = 8

What should be added to 8 to get 18 ?

8 + 10 = 18

Answer 2

18 is the Correct answer