Optellen tot het volgende tiental

Erbijsommen
Oefening 1
1. 25 + 5 =
 
2. 94 + 6 =
 
3. 45 + 5 =
 
4. 41 + 9 =
 
5. 23 + 7 =
 
6. 43 + 7 =
 
7. 68 + 2 =
 
8. 64 + 6 =
 
9. 13 + 7 =
 
10. 66 + 4 =
 
Oefening 2
1. 68 + 2 =
 
2. 57 + 3 =
 
3. 73 + 7 =
 
4. 63 + 7 =
 
5. 33 + 7 =
 
6. 83 + 7 =
 
7. 22 + 8 =
 
8. 77 + 3 =
 
9. 34 + 6 =
 
10. 38 + 2 =
 
Oefening 3
1. 38 + 2 =
 
2. 88 + 2 =
 
3. 23 + 7 =
 
4. 13 + 7 =
 
5. 28 + 2 =
 
6. 23 + 7 =
 
7. 15 + 5 =
 
8. 43 + 7 =
 
9. 24 + 6 =
 
10. 15 + 5 =
 
Oefening 4
1. 27 + 3 =
 
2. 64 + 6 =
 
3. 65 + 5 =
 
4. 67 + 3 =
 
5. 98 + 2 =
 
6. 63 + 7 =
 
7. 37 + 3 =
 
8. 77 + 3 =
 
9. 22 + 8 =
 
10. 94 + 6 =
 

Optellen tot het volgende tiental
| ANTWOORDEN

Erbijsommen
Oefening 1
1. 25 + 5 =
2. 94 + 6 =
3. 45 + 5 =
4. 41 + 9 =
5. 23 + 7 =
6. 43 + 7 =
7. 68 + 2 =
8. 64 + 6 =
9. 13 + 7 =
10. 66 + 4 =
Oefening 2
1. 68 + 2 =
2. 57 + 3 =
3. 73 + 7 =
4. 63 + 7 =
5. 33 + 7 =
6. 83 + 7 =
7. 22 + 8 =
8. 77 + 3 =
9. 34 + 6 =
10. 38 + 2 =
Oefening 3
1. 38 + 2 =
2. 88 + 2 =
3. 23 + 7 =
4. 13 + 7 =
5. 28 + 2 =
6. 23 + 7 =
7. 15 + 5 =
8. 43 + 7 =
9. 24 + 6 =
10. 15 + 5 =
Oefening 4
1. 27 + 3 =
2. 64 + 6 =
3. 65 + 5 =
4. 67 + 3 =
5. 98 + 2 =
6. 63 + 7 =
7. 37 + 3 =
8. 77 + 3 =
9. 22 + 8 =
10. 94 + 6 =