Tientallen plus tientallen

Optellen

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

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

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

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

Tientallen plus tientallen
| ANTWOORDEN

Optellen

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

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

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

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