Optellen tot het volgende tiental

Erbijsommen
Oefening 1
1. 98 + 2 =
 
2. 28 + 2 =
 
3. 17 + 3 =
 
4. 24 + 6 =
 
5. 94 + 6 =
 
6. 75 + 5 =
 
7. 83 + 7 =
 
8. 71 + 9 =
 
9. 96 + 4 =
 
10. 85 + 5 =
 
Oefening 2
1. 63 + 7 =
 
2. 68 + 2 =
 
3. 68 + 2 =
 
4. 21 + 9 =
 
5. 61 + 9 =
 
6. 48 + 2 =
 
7. 93 + 7 =
 
8. 71 + 9 =
 
9. 33 + 7 =
 
10. 43 + 7 =
 
Oefening 3
1. 38 + 2 =
 
2. 98 + 2 =
 
3. 26 + 4 =
 
4. 16 + 4 =
 
5. 13 + 7 =
 
6. 37 + 3 =
 
7. 24 + 6 =
 
8. 24 + 6 =
 
9. 88 + 2 =
 
10. 36 + 4 =
 
Oefening 4
1. 31 + 9 =
 
2. 38 + 2 =
 
3. 42 + 8 =
 
4. 54 + 6 =
 
5. 33 + 7 =
 
6. 86 + 4 =
 
7. 51 + 9 =
 
8. 52 + 8 =
 
9. 98 + 2 =
 
10. 68 + 2 =
 

Optellen tot het volgende tiental
| ANTWOORDEN

Erbijsommen
Oefening 1
1. 98 + 2 =
2. 28 + 2 =
3. 17 + 3 =
4. 24 + 6 =
5. 94 + 6 =
6. 75 + 5 =
7. 83 + 7 =
8. 71 + 9 =
9. 96 + 4 =
10. 85 + 5 =
Oefening 2
1. 63 + 7 =
2. 68 + 2 =
3. 68 + 2 =
4. 21 + 9 =
5. 61 + 9 =
6. 48 + 2 =
7. 93 + 7 =
8. 71 + 9 =
9. 33 + 7 =
10. 43 + 7 =
Oefening 3
1. 38 + 2 =
2. 98 + 2 =
3. 26 + 4 =
4. 16 + 4 =
5. 13 + 7 =
6. 37 + 3 =
7. 24 + 6 =
8. 24 + 6 =
9. 88 + 2 =
10. 36 + 4 =
Oefening 4
1. 31 + 9 =
2. 38 + 2 =
3. 42 + 8 =
4. 54 + 6 =
5. 33 + 7 =
6. 86 + 4 =
7. 51 + 9 =
8. 52 + 8 =
9. 98 + 2 =
10. 68 + 2 =