Abacus Lesson 4: Addition With Big Friends, using 10 - x Flashcards
1
Q
Big Friends
A
Two numbers that add to 10
2
Q
big friend to 1
A
9
3
Q
big friend to 2
A
8
4
Q
big friend to 3
A
7
5
Q
big friend to 4
A
6
6
Q
big friend to 5
A
5
7
Q
big friend to 6
A
4
8
Q
big friend to 7
A
3
9
Q
big friend to 8
A
2
10
Q
big friend to 9
A
1
11
Q
Abacus addition
6
4
A
6
10
-6
12
Q
Abacus addition
6
5
A
6
10
-5
13
Q
Abacus addition
6
6
A
6
10
-4
14
Q
Abacus addition
6
8
A
6
10
-2
15
Q
Abacus addition
7
9
A
7
10
-1
16
16
Q
Abacus addition
9
6
A
9
10
-4
15
17
Q
Abacus addition
6
7
A
6
10
-3
