Question

Show how to make a ten to solve 13-7.
Write the number sentence.

Answer 1

From the given problem, it says show how to make a ten to solve 13-7.
Subtracting 13 to 7 gets 6. In order to get a 10, subtract 10 by 6. 10-6 = 4.
So, you need to add 4 in order to make a ten. 

Disclaimer: What do you by make a ten to solve 13-7?