Optellen tot het volgende tiental

Erbijsommen
Oefening 1
1. 38 + 2 =
 
2. 31 + 9 =
 
3. 26 + 4 =
 
4. 34 + 6 =
 
5. 75 + 5 =
 
6. 26 + 4 =
 
7. 18 + 2 =
 
8. 78 + 2 =
 
9. 87 + 3 =
 
10. 85 + 5 =
 
Oefening 2
1. 25 + 5 =
 
2. 22 + 8 =
 
3. 65 + 5 =
 
4. 88 + 2 =
 
5. 34 + 6 =
 
6. 23 + 7 =
 
7. 35 + 5 =
 
8. 53 + 7 =
 
9. 67 + 3 =
 
10. 32 + 8 =
 
Oefening 3
1. 47 + 3 =
 
2. 18 + 2 =
 
3. 48 + 2 =
 
4. 61 + 9 =
 
5. 55 + 5 =
 
6. 78 + 2 =
 
7. 17 + 3 =
 
8. 74 + 6 =
 
9. 78 + 2 =
 
10. 61 + 9 =
 
Oefening 4
1. 12 + 8 =
 
2. 95 + 5 =
 
3. 91 + 9 =
 
4. 73 + 7 =
 
5. 56 + 4 =
 
6. 63 + 7 =
 
7. 34 + 6 =
 
8. 88 + 2 =
 
9. 63 + 7 =
 
10. 35 + 5 =
 

Optellen tot het volgende tiental
| ANTWOORDEN

Erbijsommen
Oefening 1
1. 38 + 2 =
2. 31 + 9 =
3. 26 + 4 =
4. 34 + 6 =
5. 75 + 5 =
6. 26 + 4 =
7. 18 + 2 =
8. 78 + 2 =
9. 87 + 3 =
10. 85 + 5 =
Oefening 2
1. 25 + 5 =
2. 22 + 8 =
3. 65 + 5 =
4. 88 + 2 =
5. 34 + 6 =
6. 23 + 7 =
7. 35 + 5 =
8. 53 + 7 =
9. 67 + 3 =
10. 32 + 8 =
Oefening 3
1. 47 + 3 =
2. 18 + 2 =
3. 48 + 2 =
4. 61 + 9 =
5. 55 + 5 =
6. 78 + 2 =
7. 17 + 3 =
8. 74 + 6 =
9. 78 + 2 =
10. 61 + 9 =
Oefening 4
1. 12 + 8 =
2. 95 + 5 =
3. 91 + 9 =
4. 73 + 7 =
5. 56 + 4 =
6. 63 + 7 =
7. 34 + 6 =
8. 88 + 2 =
9. 63 + 7 =
10. 35 + 5 =