Oefenen met erbij en eraf tot 1.000
In de mix
|
1.
571 – 243 =
4
328
3
2
|
2.
661 + 159 =
820
4
2
3
|
3.
112 – 80 =
4
2
32
3
|
4.
622 + 220 =
4
3
2
842
|
|
5.
1 – 0 =
4
3
1
2
|
6.
662 + 271 =
933
2
4
3
|
7.
6 – 0 =
3
2
1
6
|
8.
913 + 3 =
4
916
2
3
|
|
9.
9 – 2 =
3
7
1
2
|
10.
624 + 289 =
4
3
2
913
|
11.
602 – 539 =
2
3
4
63
|
12.
328 + 284 =
2
3
612
4
|
|
13.
861 + 3 =
2
864
4
3
|
14.
146 + 850 =
4
2
996
3
|
15.
85 + 192 =
277
3
4
2
|
16.
692 – 629 =
4
3
2
63
|
|
17.
639 – 136 =
3
2
503
4
|
18.
621 – 618 =
4
1
3
2
|
19.
291 – 39 =
3
2
252
4
|
20.
113 – 12 =
3
4
2
101
|