9
2
add
6
9
6
3
2
3
plus
sum
total
altogether
addition
Using Counters
4+3=7
add
plus
sum
total
altogether
addition
Mentally Counting On
4
6
7
5
4+3=7
add
plus
sum
total
altogether
addition
Using a Number Line
+4
5
0 1 2 3 4 5 6 7 8 9 10
5+4=9
add
plus
sum
total
altogether
addition
Empty Number Line
+1
8
+1
9
+1
+1
10
11
+1
12
13
8 + 5 = 13
add
plus
sum
total
altogether
addition
Forward Jumps
+20
+4
43
63
67
43 + 24 = 67
add
plus
sum
total
altogether
addition
Partitioning Both Numbers
43 + 24 = 67
3+4=7
40 + 20 = 60
60 + 7 = 67
add
plus
sum
total
altogether
addition
Column Addition - Step 1
HTU
TU
7 9
6 4
+ 4 3
+2 2
6
1 2
1 1 0
8 0
1 2 2
8 6
add
plus
sum
total
altogether
addition
Column Addition - Step 2
HT
7
+ 3
1 1
1
add
plus
U
7
8
5
HT
27
+ 1 6
44
1
sum
total
U
9
8
7
1
altogether
addition