Understanding how addition and subtraction relate to one another

advertisement
Understanding how addition and
subtraction relate to one another.
SOL 2.10
Grade 2
Created by;
Kim Smith
For each addition fact there is a
related subtraction fact?
A.
B.
C.
D.
25%
25%
25%
25%
25
No
I don’t know
Who cares
Yes
1
2
3
4
5
6
7
21
22
23
24
25
26
27
8
9
10
11
12
13
14
15
16
17
18
19
20
When determining a missing
number do we have to add or
subtract?
A.
B.
C.
D.
25%
25%
25%
25%
25
No
Yes
I don’t know
Maybe
1
2
3
4
5
6
7
21
22
23
24
25
26
27
8
9
10
11
12
13
14
15
16
17
18
19
20
What are the missing numbers in
this sentence?
3+__=5 or __+2=5
A.
B.
C.
D.
25%
25%
25%
25%
25
3,1
2,3
1,3
5,5
1
2
3
4
5
6
7
21
22
23
24
25
26
27
8
9
10
11
12
13
14
15
16
17
18
19
20
What are the missing numbers in
this sentence?
5-__=3 or 5-2=__
A.
B.
C.
D.
25%
25%
25%
25%
25
3,3
1,1
2,3
3,2
1
2
3
4
5
6
7
21
22
23
24
25
26
27
8
9
10
11
12
13
14
15
16
17
18
19
20
What are the missing numbers
in this sentence?
6+__=10 or __+6=10
A.
B.
C.
D.
25%
25%
25%
25%
25
3,3
2,2
4,4
6,6
1
2
3
4
5
6
7
21
22
23
24
25
26
27
8
9
10
11
12
13
14
15
16
17
18
19
20
What are the missing numbers in
this sentence?
8-__=2 or 8-6=___
A.
B.
C.
D.
25%
25%
25%
25%
25
6,2
3,1
8,8
8,2
1
2
3
4
5
6
7
21
22
23
24
25
26
27
8
9
10
11
12
13
14
15
16
17
18
19
20
What are the missing numbers in
this sentence?
5-__=1 or 4+1=__
A.
B.
C.
D.
25%
25%
25%
25%
25
4,5
3,2
3,3
4,4
1
2
3
4
5
6
7
21
22
23
24
25
26
27
8
9
10
11
12
13
14
15
16
17
18
19
20
What are the related facts for this
addition problem?
3 + 4 =7
A.
B.
C.
D.
25%
25%
25%
25%
25
7-2=5 and 7-5=2
7-3=4 and 7-4=3
7-6=1 and 7-1=6
3-4=7 and 4-3=7
1
2
3
4
5
6
7
21
22
23
24
25
26
27
8
9
10
11
12
13
14
15
16
17
18
19
20
What are the related facts for this
addition problem?
6+5=11
A.
B.
C.
D.
25%
25%
25%
25%
25
11-6=6, 11+5=16
11-5=6, 11-6=5
11+11=22, 11+22=33
11-5=6, 11-6=6
1
2
3
4
5
6
7
21
22
23
24
25
26
27
8
9
10
11
12
13
14
15
16
17
18
19
20
What are the related facts for this
subtraction problem?
15-6=9
A.
B.
C.
D.
25%
25%
25%
25%
25
9+6=15, 15-9=6
15-6=9, 15+6=21
15-9=6, 15-6=9
15+15=6, 15+15=30
1
2
3
4
5
6
7
21
22
23
24
25
26
27
8
9
10
11
12
13
14
15
16
17
18
19
20
What are fact families?
25
A.
B.
C.
D.
25%
25%
25%
25%
When all the numbers are related
When all the numbers are different
When you only use addition
When you only use subtraction
1
2
3
4
5
6
7
21
22
23
24
25
26
27
8
9
10
11
12
13
14
15
16
17
18
19
20
What are the fact families for
10+3?
25
A. 10+3=13,3+10=13, 13-10=3,13-3=10
B. 10+3=10,10+3=10,10-3=7, 10-7=3
50%
50%
1
2
3
4
5
6
7
21
22
23
24
25
26
27
8
9
10
11
12
13
14
15
16
17
18
19
20
Download