Plus en min tussen 10 en 20 Flashcards
1
Q
10+7
A
17
2
Q
13-3
A
10
3
Q
12+2
A
14
4
Q
15-2
A
13
5
Q
12+6
A
18
6
Q
19-2
A
17
7
Q
13+6
A
19
8
Q
19-3
A
16
9
Q
11+9
A
20
10
Q
18-2
A
16
11
Q
14+2
A
16
12
Q
19-2
A
17
13
Q
11+8
A
19
14
Q
11-1
A
10
15
Q
17+2
A
19
16
Q
18-5
A
13
17
Q
12+5
A
17
18
Q
19-9
A
10
19
Q
16+2
A
18
20
Q
15-5
A
10
21
Q
11+7
A
18
22
Q
20-4
A
16
23
Q
16+4
A
20
24
Q
17-3
A
14
25
Q
20-2
A
18
26
Q
20-6
A
14
