Addition Patterns Over Increasing Place Values (Within 1000)

Consider the addition pattern:

1 + 1 = _____

10 + 10 = _____

100 + 100 = _____

To complete this pattern, we find the first missing number.

1 one + 1 one = 2 ones

1 + 1 = 2
 

Now use this result to complete the pattern:
 

1 ten + 1 ten = 2 tens

10 + 10 = 20
 

1 hundred + 1 hundred  = 2 hundreds
100 + 100 = 200