Optellen tot het volgende tiental

Erbijsommen
Oefening 1
1. 58 + 2 =
 
2. 41 + 9 =
 
3. 87 + 3 =
 
4. 75 + 5 =
 
5. 51 + 9 =
 
6. 25 + 5 =
 
7. 43 + 7 =
 
8. 62 + 8 =
 
9. 44 + 6 =
 
10. 72 + 8 =
 
Oefening 2
1. 98 + 2 =
 
2. 93 + 7 =
 
3. 71 + 9 =
 
4. 85 + 5 =
 
5. 98 + 2 =
 
6. 27 + 3 =
 
7. 38 + 2 =
 
8. 54 + 6 =
 
9. 34 + 6 =
 
10. 16 + 4 =
 
Oefening 3
1. 92 + 8 =
 
2. 86 + 4 =
 
3. 95 + 5 =
 
4. 52 + 8 =
 
5. 51 + 9 =
 
6. 92 + 8 =
 
7. 92 + 8 =
 
8. 58 + 2 =
 
9. 53 + 7 =
 
10. 78 + 2 =
 
Oefening 4
1. 55 + 5 =
 
2. 15 + 5 =
 
3. 55 + 5 =
 
4. 48 + 2 =
 
5. 72 + 8 =
 
6. 65 + 5 =
 
7. 28 + 2 =
 
8. 51 + 9 =
 
9. 76 + 4 =
 
10. 51 + 9 =
 

Optellen tot het volgende tiental
| ANTWOORDEN

Erbijsommen
Oefening 1
1. 58 + 2 =
2. 41 + 9 =
3. 87 + 3 =
4. 75 + 5 =
5. 51 + 9 =
6. 25 + 5 =
7. 43 + 7 =
8. 62 + 8 =
9. 44 + 6 =
10. 72 + 8 =
Oefening 2
1. 98 + 2 =
2. 93 + 7 =
3. 71 + 9 =
4. 85 + 5 =
5. 98 + 2 =
6. 27 + 3 =
7. 38 + 2 =
8. 54 + 6 =
9. 34 + 6 =
10. 16 + 4 =
Oefening 3
1. 92 + 8 =
2. 86 + 4 =
3. 95 + 5 =
4. 52 + 8 =
5. 51 + 9 =
6. 92 + 8 =
7. 92 + 8 =
8. 58 + 2 =
9. 53 + 7 =
10. 78 + 2 =
Oefening 4
1. 55 + 5 =
2. 15 + 5 =
3. 55 + 5 =
4. 48 + 2 =
5. 72 + 8 =
6. 65 + 5 =
7. 28 + 2 =
8. 51 + 9 =
9. 76 + 4 =
10. 51 + 9 =