Optellen tot het volgende tiental

Erbijsommen
Oefening 1
1. 31 + 9 =
 
2. 32 + 8 =
 
3. 76 + 4 =
 
4. 68 + 2 =
 
5. 22 + 8 =
 
6. 44 + 6 =
 
7. 14 + 6 =
 
8. 38 + 2 =
 
9. 73 + 7 =
 
10. 24 + 6 =
 
Oefening 2
1. 48 + 2 =
 
2. 56 + 4 =
 
3. 36 + 4 =
 
4. 86 + 4 =
 
5. 77 + 3 =
 
6. 91 + 9 =
 
7. 32 + 8 =
 
8. 82 + 8 =
 
9. 72 + 8 =
 
10. 11 + 9 =
 
Oefening 3
1. 13 + 7 =
 
2. 97 + 3 =
 
3. 71 + 9 =
 
4. 12 + 8 =
 
5. 26 + 4 =
 
6. 96 + 4 =
 
7. 38 + 2 =
 
8. 28 + 2 =
 
9. 82 + 8 =
 
10. 81 + 9 =
 
Oefening 4
1. 73 + 7 =
 
2. 55 + 5 =
 
3. 35 + 5 =
 
4. 18 + 2 =
 
5. 35 + 5 =
 
6. 35 + 5 =
 
7. 18 + 2 =
 
8. 87 + 3 =
 
9. 48 + 2 =
 
10. 21 + 9 =
 

Optellen tot het volgende tiental
| ANTWOORDEN

Erbijsommen
Oefening 1
1. 31 + 9 =
2. 32 + 8 =
3. 76 + 4 =
4. 68 + 2 =
5. 22 + 8 =
6. 44 + 6 =
7. 14 + 6 =
8. 38 + 2 =
9. 73 + 7 =
10. 24 + 6 =
Oefening 2
1. 48 + 2 =
2. 56 + 4 =
3. 36 + 4 =
4. 86 + 4 =
5. 77 + 3 =
6. 91 + 9 =
7. 32 + 8 =
8. 82 + 8 =
9. 72 + 8 =
10. 11 + 9 =
Oefening 3
1. 13 + 7 =
2. 97 + 3 =
3. 71 + 9 =
4. 12 + 8 =
5. 26 + 4 =
6. 96 + 4 =
7. 38 + 2 =
8. 28 + 2 =
9. 82 + 8 =
10. 81 + 9 =
Oefening 4
1. 73 + 7 =
2. 55 + 5 =
3. 35 + 5 =
4. 18 + 2 =
5. 35 + 5 =
6. 35 + 5 =
7. 18 + 2 =
8. 87 + 3 =
9. 48 + 2 =
10. 21 + 9 =