Respuesta :
Answer:
12 - 7 = 5
10 - 5 = 5
Step-by-step explanation:
We need to apply tens fact to solve the given problem.
1 ten = 10 ones
The given expression is
12 - 7
Here, 12 is the two digit number. Write the number as the sum of its place values.
12 = 10 + 2
So, the given expression can be rewritten as
(10 + 2) - 7
10 + (2 - 7)
10 - 5
5
Therefore, 12 - 7 = 5 and 10 - 5 = 5.
