Addition
6 + 3 = 8
7 + 3 = 9
6 + 4 = 9
6 + 3 = 9
4 + 2 =
5 + 1
Add
4 + 0 = ____
4 + 1 = ____
Write the missing numerals
______ + ______ = 9
______ + ______ = 1
How many altogether?