Tientallen plus tientallen

Erbijsommen
Oefening 1
1. 40 + 10 =
 
2. 50 + 20 =
 
3. 70 + 10 =
 
4. 80 + 10 =
 
5. 50 + 30 =
 
6. 50 + 40 =
 
7. 70 + 20 =
 
8. 30 + 60 =
 
9. 40 + 10 =
 
10. 30 + 50 =
 
Oefening 2
1. 50 + 40 =
 
2. 10 + 10 =
 
3. 30 + 40 =
 
4. 50 + 20 =
 
5. 70 + 10 =
 
6. 10 + 10 =
 
7. 60 + 30 =
 
8. 60 + 30 =
 
9. 20 + 30 =
 
10. 10 + 40 =
 
Oefening 3
1. 30 + 20 =
 
2. 50 + 20 =
 
3. 40 + 50 =
 
4. 50 + 40 =
 
5. 40 + 10 =
 
6. 50 + 20 =
 
7. 30 + 20 =
 
8. 20 + 70 =
 
9. 30 + 60 =
 
10. 80 + 10 =
 
Oefening 4
1. 30 + 20 =
 
2. 50 + 20 =
 
3. 80 + 10 =
 
4. 80 + 10 =
 
5. 50 + 20 =
 
6. 40 + 10 =
 
7. 30 + 60 =
 
8. 70 + 10 =
 
9. 80 + 10 =
 
10. 50 + 40 =
 

Tientallen plus tientallen
| ANTWOORDEN

Erbijsommen
Oefening 1
1. 40 + 10 =
2. 50 + 20 =
3. 70 + 10 =
4. 80 + 10 =
5. 50 + 30 =
6. 50 + 40 =
7. 70 + 20 =
8. 30 + 60 =
9. 40 + 10 =
10. 30 + 50 =
Oefening 2
1. 50 + 40 =
2. 10 + 10 =
3. 30 + 40 =
4. 50 + 20 =
5. 70 + 10 =
6. 10 + 10 =
7. 60 + 30 =
8. 60 + 30 =
9. 20 + 30 =
10. 10 + 40 =
Oefening 3
1. 30 + 20 =
2. 50 + 20 =
3. 40 + 50 =
4. 50 + 40 =
5. 40 + 10 =
6. 50 + 20 =
7. 30 + 20 =
8. 20 + 70 =
9. 30 + 60 =
10. 80 + 10 =
Oefening 4
1. 30 + 20 =
2. 50 + 20 =
3. 80 + 10 =
4. 80 + 10 =
5. 50 + 20 =
6. 40 + 10 =
7. 30 + 60 =
8. 70 + 10 =
9. 80 + 10 =
10. 50 + 40 =