Tientallen plus tientallen

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

Tientallen plus tientallen
| ANTWOORDEN

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