Optellen tot het volgende tiental

Erbijsommen
Oefening 1
1. 42 + 8 =
 
2. 67 + 3 =
 
3. 97 + 3 =
 
4. 74 + 6 =
 
5. 21 + 9 =
 
6. 44 + 6 =
 
7. 48 + 2 =
 
8. 78 + 2 =
 
9. 88 + 2 =
 
10. 87 + 3 =
 
Oefening 2
1. 77 + 3 =
 
2. 38 + 2 =
 
3. 48 + 2 =
 
4. 11 + 9 =
 
5. 93 + 7 =
 
6. 97 + 3 =
 
7. 83 + 7 =
 
8. 51 + 9 =
 
9. 77 + 3 =
 
10. 21 + 9 =
 
Oefening 3
1. 52 + 8 =
 
2. 52 + 8 =
 
3. 62 + 8 =
 
4. 31 + 9 =
 
5. 33 + 7 =
 
6. 94 + 6 =
 
7. 93 + 7 =
 
8. 45 + 5 =
 
9. 34 + 6 =
 
10. 66 + 4 =
 
Oefening 4
1. 33 + 7 =
 
2. 38 + 2 =
 
3. 31 + 9 =
 
4. 32 + 8 =
 
5. 17 + 3 =
 
6. 97 + 3 =
 
7. 22 + 8 =
 
8. 76 + 4 =
 
9. 55 + 5 =
 
10. 11 + 9 =
 

Optellen tot het volgende tiental
| ANTWOORDEN

Erbijsommen
Oefening 1
1. 42 + 8 =
2. 67 + 3 =
3. 97 + 3 =
4. 74 + 6 =
5. 21 + 9 =
6. 44 + 6 =
7. 48 + 2 =
8. 78 + 2 =
9. 88 + 2 =
10. 87 + 3 =
Oefening 2
1. 77 + 3 =
2. 38 + 2 =
3. 48 + 2 =
4. 11 + 9 =
5. 93 + 7 =
6. 97 + 3 =
7. 83 + 7 =
8. 51 + 9 =
9. 77 + 3 =
10. 21 + 9 =
Oefening 3
1. 52 + 8 =
2. 52 + 8 =
3. 62 + 8 =
4. 31 + 9 =
5. 33 + 7 =
6. 94 + 6 =
7. 93 + 7 =
8. 45 + 5 =
9. 34 + 6 =
10. 66 + 4 =
Oefening 4
1. 33 + 7 =
2. 38 + 2 =
3. 31 + 9 =
4. 32 + 8 =
5. 17 + 3 =
6. 97 + 3 =
7. 22 + 8 =
8. 76 + 4 =
9. 55 + 5 =
10. 11 + 9 =