9+0=
9
4-0=
4
Jon has 3 apples. He got 2 more apples. How many apples does Jon have?
5
6 tens and 4 ones
64
Addition
joining sets together, counting
7+1=
1+7=
8
6-2=
4
Kelly has 2 dolls. She lost 1 of them. How many dolls does Kelly have?
1
3 tens and 1 ones
31
Subtraction
2+4+2=
8
8-1=
7
He gave 3 away.
How many trucks does he have left?
3
7 tens and 5 ones
75
Adding and Subtracting Zero
The other number stays the same
3+5+2=
10
5-4=
1
Ann has 2 dishes.
How many dishes do they have all together.
5
30+8=
38
Switching the order of the addends
The answer does not change
3+7=
7+3=
10
8-8=
0
Sara has 4 leaves.
Mark has 2 leaves.
Carlos has 3 leaves.
How many leaves do they have all together?
9
84=
80+4, 8 tens and 4 ones