subtraction 20-19 Flashcards
1
Q
20-1=
A
19
2
Q
20-2=
A
18
3
Q
20-3=
A
17
4
Q
20-4=
A
16
5
Q
20-5=
A
15
6
Q
20-6=
A
14
7
Q
20-7=
A
13
8
Q
20-8=
A
12
9
Q
20-9=
A
11
10
Q
20-10=
A
10
11
Q
20-11=
A
9
12
Q
20-12=
A
8
13
Q
20-13=
A
7
14
Q
20-14=
A
6
15
Q
20-15=
A
5
16
Q
20-16=
A
4
17
Q
20-17=
A
3
18
Q
20-18=
A
2
19
Q
20-19=
A
1
20
Q
20-20=
A
0
21
Q
19-0=
A
19
22
Q
19-0=
A
18
23
Q
19-1=
A
17
24
Q
19-2=
A
16
25
Q
19-3=
A
15
26
Q
19-4=
A
14
27
Q
19-5=
A
13
28
Q
19-6=
A
12
29
Q
19-7=
A
11
30
Q
19-8=
A
10
31
Q
19-9=
A
9
32
Q
19-10=
A
8
33
Q
19-12=
A
7
34
Q
19-13=
A
6
35
Q
19-14=
A
5
36
Q
19-15=
A
4
37
Q
19-16=
A
3
38
Q
19-17=
A
2
39
Q
19-18=
A
1
40
Q
19-19=
A
0
