Addition Strategies
Addition Strategies
There are lots of different ways to add numbers. As each child learns
differently, we teach a wide range of addition strategies. Here are some of
the strategies your child may use:
Number Line
Using Pictures
There are lots of different ways to add numbers. As each child learns
differently, we teach a wide range of addition strategies. Here are some of
the strategies your child may use:
Number Line
Using Pictures
7+4=
4+1=
0
Partition into tens and ones and
recombine
12 + 23 = 35
1
2
3
4
5
6
7
11
Expanded Column Method
Partitioning 3 digit numbers
248 + 132 =
622
200 + 100 = 300
40 + 30 = 70
8 + 2 = 10
300 + 70 + 10 = 380
1 1
358
+ 73
431
1 11
3587 +
675
4262
5
6
7
9
30
20
400 + 50 + 10 = 460
Expanded Vertical Method
374
+ 248
12
(4 + 8)
110 (70 + 40)
500 (300 + 200)
622
246 + 42 = is the same as 246 + 40 + 2
Vertical Method
1 1
358
+ 73
431
1 11
3587 +
675
4262
12
+2
35
33
Number line (efficient jumps)
374 + 248 = 622
+ 40
574
+8
614
Expanded Column Method
300
+ 100
or
11
23 + 12 = 23 + 10 + 2
= 33 + 2
= 35
336 + 124 =
6
4
10
Partition the second number only
374
Add or subtract the nearest multiple
of 10 or 100, then adjust
8
458 + 79 = is the same as 458 + 80 – 1
300
+ 100
246 + 42 = is the same as 246 + 40 + 2
Vertical Method
4
+ 200
336 + 124 =
458 + 79 = is the same as 458 + 80 – 1
or
3
23
+8
614
2
+10
35
+ 40
574
Partition into tens and ones and
recombine
1
10 + 20 = 30 (add the tens)
2+3=5
(add the ones)
30 + 5 =35
Number line (efficient jumps)
374 + 248 = 622
374
0
12 + 23 = 35
33
+ 200
7+4=
12
+2
23
Add or subtract the nearest multiple
of 10 or 100, then adjust
10
23 + 12 = 23 + 10 + 2
= 33 + 2
= 35
+10
200 + 100 = 300
40 + 30 = 70
8 + 2 = 10
300 + 70 + 10 = 380
9
Partition the second number only
10 + 20 = 30 (add the tens)
2+3=5
(add the ones)
30 + 5 =35
Partitioning 3 digit numbers
248 + 132 =
8
4+1=
30
20
6
4
400 + 50 + 10 = 460
Expanded Vertical Method
374
+ 248
12
(4 + 8)
110 (70 + 40)
500 (300 + 200)
622
622