Question

Show the tens fact you used.write the difference.
12-7=
10- =

Answer 1

12-7=5
10-5=5
so your answer is 5

Answer 2

12 - 7 = 5

10 - 5 = 5

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.