Here are the missing digits for each addition problem. I have worked through them column by column, starting from the right (the ones place) and moving to the left, keeping track of any carries.
1.
1 0 1
6 9 3
1
+ 1
4 5 6
1 9 8
-------------------------
2 4 6 8 0 2 4
2.
2 1
7 2 7
8 9
+ 1
4 6
7 8 7
0
-------------------------
3 5 7 9 5 7 9
3.
3
8 2 1 7
2 2
+
2 8
8 4
8 8 4
-------------------------
6 6 0 6 6 0 6
4.
5 2
1 9
8 7 7
+
1 4 5
7 7 8
9
-------------------------
6 6 6 6 6 6 6
5.
1 1
3 5 6 8 0
+ 1
0 9 8
7 6 5
-------------------------
2 2 3 3 4 4 5
6.
1 8
3 7 2
8 2
+ 4
9 4
0 4 9
4
-------------------------
6 7 7 6 7 7 6
7.
2
9 1 9 0 9
0
+
2 9 3
9 4 9 5
-------------------------
5 8 5 8 5 8 5
8.
6 4 1
0 7
8 8
+ 1 3
6 7
0 9
9
-------------------------
7 7 7 7 7 7 7
Parent Tip: Review the logic above to help your child master the concept of missing number addition.
