Optellen tot het volgende tiental

Erbijsommen
Oefening 1
1. 12 + 8 =
 
2. 65 + 5 =
 
3. 72 + 8 =
 
4. 95 + 5 =
 
5. 56 + 4 =
 
6. 92 + 8 =
 
7. 62 + 8 =
 
8. 63 + 7 =
 
9. 46 + 4 =
 
10. 78 + 2 =
 
Oefening 2
1. 48 + 2 =
 
2. 95 + 5 =
 
3. 31 + 9 =
 
4. 64 + 6 =
 
5. 47 + 3 =
 
6. 62 + 8 =
 
7. 95 + 5 =
 
8. 93 + 7 =
 
9. 56 + 4 =
 
10. 64 + 6 =
 
Oefening 3
1. 91 + 9 =
 
2. 42 + 8 =
 
3. 37 + 3 =
 
4. 18 + 2 =
 
5. 73 + 7 =
 
6. 78 + 2 =
 
7. 51 + 9 =
 
8. 84 + 6 =
 
9. 48 + 2 =
 
10. 47 + 3 =
 
Oefening 4
1. 48 + 2 =
 
2. 52 + 8 =
 
3. 15 + 5 =
 
4. 53 + 7 =
 
5. 42 + 8 =
 
6. 26 + 4 =
 
7. 56 + 4 =
 
8. 86 + 4 =
 
9. 62 + 8 =
 
10. 97 + 3 =
 

Optellen tot het volgende tiental
| ANTWOORDEN

Erbijsommen
Oefening 1
1. 12 + 8 =
2. 65 + 5 =
3. 72 + 8 =
4. 95 + 5 =
5. 56 + 4 =
6. 92 + 8 =
7. 62 + 8 =
8. 63 + 7 =
9. 46 + 4 =
10. 78 + 2 =
Oefening 2
1. 48 + 2 =
2. 95 + 5 =
3. 31 + 9 =
4. 64 + 6 =
5. 47 + 3 =
6. 62 + 8 =
7. 95 + 5 =
8. 93 + 7 =
9. 56 + 4 =
10. 64 + 6 =
Oefening 3
1. 91 + 9 =
2. 42 + 8 =
3. 37 + 3 =
4. 18 + 2 =
5. 73 + 7 =
6. 78 + 2 =
7. 51 + 9 =
8. 84 + 6 =
9. 48 + 2 =
10. 47 + 3 =
Oefening 4
1. 48 + 2 =
2. 52 + 8 =
3. 15 + 5 =
4. 53 + 7 =
5. 42 + 8 =
6. 26 + 4 =
7. 56 + 4 =
8. 86 + 4 =
9. 62 + 8 =
10. 97 + 3 =