Question

Alia used 67 + 38 = 105 to check her subtraction.Which math problem could she be checking?Mark all that apply.A) 67 - 38B) 105 – 67 =C) 105 + 38 =D) 105 – 38 =

Answer 1

From the given options, she could be checking two of them:

`\begin{gathered} 105-67=\square \\ 105-38=\square \end{gathered}`

This is because she is trying to prove that the difference of 105 and one of the numbers is the other number. What we use to prove a substraction is an addition.