Optellen tot het volgende tiental

Erbijsommen
Oefening 1
1. 87 + 3 =
 
2. 43 + 7 =
 
3. 16 + 4 =
 
4. 97 + 3 =
 
5. 35 + 5 =
 
6. 17 + 3 =
 
7. 44 + 6 =
 
8. 46 + 4 =
 
9. 28 + 2 =
 
10. 17 + 3 =
 
Oefening 2
1. 13 + 7 =
 
2. 63 + 7 =
 
3. 76 + 4 =
 
4. 63 + 7 =
 
5. 98 + 2 =
 
6. 72 + 8 =
 
7. 85 + 5 =
 
8. 82 + 8 =
 
9. 65 + 5 =
 
10. 25 + 5 =
 
Oefening 3
1. 16 + 4 =
 
2. 15 + 5 =
 
3. 33 + 7 =
 
4. 34 + 6 =
 
5. 78 + 2 =
 
6. 51 + 9 =
 
7. 28 + 2 =
 
8. 12 + 8 =
 
9. 24 + 6 =
 
10. 73 + 7 =
 
Oefening 4
1. 92 + 8 =
 
2. 74 + 6 =
 
3. 55 + 5 =
 
4. 15 + 5 =
 
5. 94 + 6 =
 
6. 85 + 5 =
 
7. 17 + 3 =
 
8. 76 + 4 =
 
9. 52 + 8 =
 
10. 25 + 5 =
 

Optellen tot het volgende tiental
| ANTWOORDEN

Erbijsommen
Oefening 1
1. 87 + 3 =
2. 43 + 7 =
3. 16 + 4 =
4. 97 + 3 =
5. 35 + 5 =
6. 17 + 3 =
7. 44 + 6 =
8. 46 + 4 =
9. 28 + 2 =
10. 17 + 3 =
Oefening 2
1. 13 + 7 =
2. 63 + 7 =
3. 76 + 4 =
4. 63 + 7 =
5. 98 + 2 =
6. 72 + 8 =
7. 85 + 5 =
8. 82 + 8 =
9. 65 + 5 =
10. 25 + 5 =
Oefening 3
1. 16 + 4 =
2. 15 + 5 =
3. 33 + 7 =
4. 34 + 6 =
5. 78 + 2 =
6. 51 + 9 =
7. 28 + 2 =
8. 12 + 8 =
9. 24 + 6 =
10. 73 + 7 =
Oefening 4
1. 92 + 8 =
2. 74 + 6 =
3. 55 + 5 =
4. 15 + 5 =
5. 94 + 6 =
6. 85 + 5 =
7. 17 + 3 =
8. 76 + 4 =
9. 52 + 8 =
10. 25 + 5 =