"Ik kan optellen en aftrekken met gelijknamige breuken."

1/6 + 3/6 =
1. 4/6
2. 5/6
3. 1
4. 1 1/6
2/5 + 3/5 =
1. 2/5
2. 3/5
3. 4/5
4. 1
8/10 - 3/10 =
1. 4/10
2. 5/10
3. 11/10
4. 1 1/10
4/12 + 10/12 =
1. 1 1/12
2. 6/12
3. 14/24
4. 1 2/12
8/11 - 2/11 =
1. 10/11
2. 6/11
3. 6/0
4. 10/22
4/7 + 6/7 =
1. 2/7
2. 1 2/7
3. 1 3/7
4. 1 4/7
1 - 3/5 =
1. 2/5
2. 3/5
3. 1 3/5
4. 5/2
1 1/5 - 3/5 =
1. 2/5
2. 1 2/5
3. 3/5
4. 4/5
1 1/8 - 5/8 =
1. 4/8
2. 1 4/8
3. 6/8
4. 5/8
2 - 3/9 =
1. 2 3/9
2. 1 3/9
3. 1 6/9
4. 6/9
3/11 + 6/11 =
1. 3/11
2. 9/11
3. 9/22
4. 10/11
1 2/7 + 1 1/7 =
1. 10/7
2. 3 3/7
3. 2 3/7
4. 5/7