Tientallen plus tientallen

Optellen

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

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

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

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

Tientallen plus tientallen
| ANTWOORDEN

Optellen

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

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

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

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