Tientallen plus tientallen

Optellen

Oefening 1
1.	30 + 10 =
2.	70 + 20 =
3.	80 + 10 =
4.	70 + 10 =
5.	80 + 10 =
6.	80 + 10 =
7.	80 + 10 =
8.	70 + 20 =
9.	30 + 40 =
10.	50 + 30 =

Oefening 2
1.	80 + 10 =
2.	10 + 60 =
3.	70 + 20 =
4.	50 + 30 =
5.	10 + 40 =
6.	80 + 10 =
7.	20 + 20 =
8.	80 + 10 =
9.	70 + 20 =
10.	10 + 60 =

Oefening 3
1.	60 + 30 =
2.	70 + 10 =
3.	20 + 30 =
4.	30 + 40 =
5.	40 + 50 =
6.	70 + 20 =
7.	10 + 40 =
8.	60 + 10 =
9.	50 + 10 =
10.	10 + 70 =

Oefening 4
1.	60 + 30 =
2.	10 + 50 =
3.	40 + 20 =
4.	30 + 10 =
5.	40 + 40 =
6.	70 + 20 =
7.	80 + 10 =
8.	20 + 40 =
9.	50 + 30 =
10.	50 + 10 =

Tientallen plus tientallen
| ANTWOORDEN

Optellen

Oefening 1
1.	30 + 10 =	40
2.	70 + 20 =	90
3.	80 + 10 =	90
4.	70 + 10 =	80
5.	80 + 10 =	90
6.	80 + 10 =	90
7.	80 + 10 =	90
8.	70 + 20 =	90
9.	30 + 40 =	70
10.	50 + 30 =	80

Oefening 2
1.	80 + 10 =	90
2.	10 + 60 =	70
3.	70 + 20 =	90
4.	50 + 30 =	80
5.	10 + 40 =	50
6.	80 + 10 =	90
7.	20 + 20 =	40
8.	80 + 10 =	90
9.	70 + 20 =	90
10.	10 + 60 =	70

Oefening 3
1.	60 + 30 =	90
2.	70 + 10 =	80
3.	20 + 30 =	50
4.	30 + 40 =	70
5.	40 + 50 =	90
6.	70 + 20 =	90
7.	10 + 40 =	50
8.	60 + 10 =	70
9.	50 + 10 =	60
10.	10 + 70 =	80

Oefening 4
1.	60 + 30 =	90
2.	10 + 50 =	60
3.	40 + 20 =	60
4.	30 + 10 =	40
5.	40 + 40 =	80
6.	70 + 20 =	90
7.	80 + 10 =	90
8.	20 + 40 =	60
9.	50 + 30 =	80
10.	50 + 10 =	60