Answer: To solve the problem, we need to find the total number of juice boxes.
We know that there are 3 packages of 10 juice boxes, which is 3*10 = 30 juice boxes.
And there are 7 extra juice boxes.
So the total number of juice boxes is 30 + 7 = 37 juice boxes.
We can write the number of tens and ones as:
Tens: 3
Ones: 7
And the total number of juice boxes is 37.
Explanation: