Optellen tot het volgende tiental

Erbijsommen
Oefening 1
1. 41 + 9 =
 
2. 35 + 5 =
 
3. 52 + 8 =
 
4. 27 + 3 =
 
5. 15 + 5 =
 
6. 87 + 3 =
 
7. 11 + 9 =
 
8. 98 + 2 =
 
9. 68 + 2 =
 
10. 43 + 7 =
 
Oefening 2
1. 64 + 6 =
 
2. 37 + 3 =
 
3. 46 + 4 =
 
4. 26 + 4 =
 
5. 97 + 3 =
 
6. 13 + 7 =
 
7. 11 + 9 =
 
8. 75 + 5 =
 
9. 58 + 2 =
 
10. 73 + 7 =
 
Oefening 3
1. 72 + 8 =
 
2. 44 + 6 =
 
3. 56 + 4 =
 
4. 68 + 2 =
 
5. 83 + 7 =
 
6. 75 + 5 =
 
7. 12 + 8 =
 
8. 22 + 8 =
 
9. 11 + 9 =
 
10. 97 + 3 =
 
Oefening 4
1. 32 + 8 =
 
2. 73 + 7 =
 
3. 55 + 5 =
 
4. 96 + 4 =
 
5. 52 + 8 =
 
6. 65 + 5 =
 
7. 44 + 6 =
 
8. 81 + 9 =
 
9. 46 + 4 =
 
10. 61 + 9 =
 

Optellen tot het volgende tiental
| ANTWOORDEN

Erbijsommen
Oefening 1
1. 41 + 9 =
2. 35 + 5 =
3. 52 + 8 =
4. 27 + 3 =
5. 15 + 5 =
6. 87 + 3 =
7. 11 + 9 =
8. 98 + 2 =
9. 68 + 2 =
10. 43 + 7 =
Oefening 2
1. 64 + 6 =
2. 37 + 3 =
3. 46 + 4 =
4. 26 + 4 =
5. 97 + 3 =
6. 13 + 7 =
7. 11 + 9 =
8. 75 + 5 =
9. 58 + 2 =
10. 73 + 7 =
Oefening 3
1. 72 + 8 =
2. 44 + 6 =
3. 56 + 4 =
4. 68 + 2 =
5. 83 + 7 =
6. 75 + 5 =
7. 12 + 8 =
8. 22 + 8 =
9. 11 + 9 =
10. 97 + 3 =
Oefening 4
1. 32 + 8 =
2. 73 + 7 =
3. 55 + 5 =
4. 96 + 4 =
5. 52 + 8 =
6. 65 + 5 =
7. 44 + 6 =
8. 81 + 9 =
9. 46 + 4 =
10. 61 + 9 =