Tientallen plus tientallen

Optellen

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

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

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

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

Tientallen plus tientallen
| ANTWOORDEN

Optellen

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

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

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

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