Optellen tot het volgende tiental

Erbijsommen
Oefening 1
1. 48 + 2 =
 
2. 11 + 9 =
 
3. 23 + 7 =
 
4. 17 + 3 =
 
5. 72 + 8 =
 
6. 66 + 4 =
 
7. 32 + 8 =
 
8. 41 + 9 =
 
9. 27 + 3 =
 
10. 87 + 3 =
 
Oefening 2
1. 11 + 9 =
 
2. 27 + 3 =
 
3. 36 + 4 =
 
4. 45 + 5 =
 
5. 53 + 7 =
 
6. 17 + 3 =
 
7. 71 + 9 =
 
8. 53 + 7 =
 
9. 94 + 6 =
 
10. 63 + 7 =
 
Oefening 3
1. 83 + 7 =
 
2. 14 + 6 =
 
3. 18 + 2 =
 
4. 25 + 5 =
 
5. 14 + 6 =
 
6. 78 + 2 =
 
7. 75 + 5 =
 
8. 12 + 8 =
 
9. 56 + 4 =
 
10. 36 + 4 =
 
Oefening 4
1. 14 + 6 =
 
2. 31 + 9 =
 
3. 57 + 3 =
 
4. 42 + 8 =
 
5. 52 + 8 =
 
6. 83 + 7 =
 
7. 55 + 5 =
 
8. 54 + 6 =
 
9. 23 + 7 =
 
10. 93 + 7 =
 

Optellen tot het volgende tiental
| ANTWOORDEN

Erbijsommen
Oefening 1
1. 48 + 2 =
2. 11 + 9 =
3. 23 + 7 =
4. 17 + 3 =
5. 72 + 8 =
6. 66 + 4 =
7. 32 + 8 =
8. 41 + 9 =
9. 27 + 3 =
10. 87 + 3 =
Oefening 2
1. 11 + 9 =
2. 27 + 3 =
3. 36 + 4 =
4. 45 + 5 =
5. 53 + 7 =
6. 17 + 3 =
7. 71 + 9 =
8. 53 + 7 =
9. 94 + 6 =
10. 63 + 7 =
Oefening 3
1. 83 + 7 =
2. 14 + 6 =
3. 18 + 2 =
4. 25 + 5 =
5. 14 + 6 =
6. 78 + 2 =
7. 75 + 5 =
8. 12 + 8 =
9. 56 + 4 =
10. 36 + 4 =
Oefening 4
1. 14 + 6 =
2. 31 + 9 =
3. 57 + 3 =
4. 42 + 8 =
5. 52 + 8 =
6. 83 + 7 =
7. 55 + 5 =
8. 54 + 6 =
9. 23 + 7 =
10. 93 + 7 =