Tientallen aftrekken van tientallen

Erafsommen

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

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

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

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

Tientallen aftrekken van tientallen
| ANTWOORDEN

Erafsommen

Oefening 1
1.	30 - 20 =	10
2.	70 - 60 =	10
3.	40 - 20 =	20
4.	40 - 10 =	30
5.	80 - 80 =	0
6.	80 - 70 =	10
7.	50 - 50 =	0
8.	80 - 50 =	30
9.	50 - 30 =	20
10.	30 - 20 =	10

Oefening 2
1.	80 - 60 =	20
2.	20 - 20 =	0
3.	80 - 10 =	70
4.	60 - 50 =	10
5.	30 - 30 =	0
6.	60 - 40 =	20
7.	30 - 30 =	0
8.	70 - 50 =	20
9.	60 - 20 =	40
10.	40 - 20 =	20

Oefening 3
1.	10 - 10 =	0
2.	50 - 30 =	20
3.	60 - 10 =	50
4.	50 - 50 =	0
5.	40 - 20 =	20
6.	70 - 30 =	40
7.	80 - 50 =	30
8.	20 - 20 =	0
9.	30 - 10 =	20
10.	40 - 20 =	20

Oefening 4
1.	10 - 10 =	0
2.	10 - 10 =	0
3.	50 - 10 =	40
4.	30 - 30 =	0
5.	20 - 10 =	10
6.	50 - 50 =	0
7.	60 - 20 =	40
8.	20 - 10 =	10
9.	70 - 40 =	30
10.	50 - 50 =	0