Optellen tot het volgende tiental

Erbijsommen
Oefening 1
1. 91 + 9 =
 
2. 58 + 2 =
 
3. 65 + 5 =
 
4. 42 + 8 =
 
5. 34 + 6 =
 
6. 76 + 4 =
 
7. 78 + 2 =
 
8. 26 + 4 =
 
9. 18 + 2 =
 
10. 54 + 6 =
 
Oefening 2
1. 47 + 3 =
 
2. 13 + 7 =
 
3. 47 + 3 =
 
4. 81 + 9 =
 
5. 33 + 7 =
 
6. 28 + 2 =
 
7. 22 + 8 =
 
8. 84 + 6 =
 
9. 56 + 4 =
 
10. 73 + 7 =
 
Oefening 3
1. 86 + 4 =
 
2. 43 + 7 =
 
3. 42 + 8 =
 
4. 62 + 8 =
 
5. 57 + 3 =
 
6. 94 + 6 =
 
7. 97 + 3 =
 
8. 32 + 8 =
 
9. 54 + 6 =
 
10. 37 + 3 =
 
Oefening 4
1. 54 + 6 =
 
2. 85 + 5 =
 
3. 41 + 9 =
 
4. 67 + 3 =
 
5. 43 + 7 =
 
6. 27 + 3 =
 
7. 63 + 7 =
 
8. 53 + 7 =
 
9. 56 + 4 =
 
10. 66 + 4 =
 

Optellen tot het volgende tiental
| ANTWOORDEN

Erbijsommen
Oefening 1
1. 91 + 9 =
2. 58 + 2 =
3. 65 + 5 =
4. 42 + 8 =
5. 34 + 6 =
6. 76 + 4 =
7. 78 + 2 =
8. 26 + 4 =
9. 18 + 2 =
10. 54 + 6 =
Oefening 2
1. 47 + 3 =
2. 13 + 7 =
3. 47 + 3 =
4. 81 + 9 =
5. 33 + 7 =
6. 28 + 2 =
7. 22 + 8 =
8. 84 + 6 =
9. 56 + 4 =
10. 73 + 7 =
Oefening 3
1. 86 + 4 =
2. 43 + 7 =
3. 42 + 8 =
4. 62 + 8 =
5. 57 + 3 =
6. 94 + 6 =
7. 97 + 3 =
8. 32 + 8 =
9. 54 + 6 =
10. 37 + 3 =
Oefening 4
1. 54 + 6 =
2. 85 + 5 =
3. 41 + 9 =
4. 67 + 3 =
5. 43 + 7 =
6. 27 + 3 =
7. 63 + 7 =
8. 53 + 7 =
9. 56 + 4 =
10. 66 + 4 =