Oefenen met erbij en eraf tot 1.000
In de mix
|
1.
575 – 506 =
2
3
69
4
|
2.
690 – 391 =
299
2
3
4
|
3.
54 – 42 =
3
2
1
12
|
4.
137 + 6 =
3
4
143
2
|
|
5.
531 – 36 =
495
2
3
4
|
6.
892 – 282 =
3
2
4
610
|
7.
650 + 267 =
2
917
4
3
|
8.
416 + 168 =
3
4
2
584
|
|
9.
971 – 661 =
2
3
310
4
|
10.
793 – 443 =
350
3
4
2
|
11.
5 + 405 =
410
4
3
2
|
12.
368 + 505 =
3
4
873
2
|
|
13.
137 + 370 =
4
507
2
3
|
14.
517 + 154 =
3
4
671
2
|
15.
777 – 92 =
685
3
2
4
|
16.
527 + 346 =
3
873
4
2
|
|
17.
568 – 63 =
2
505
3
4
|
18.
54 + 257 =
2
4
3
311
|
19.
815 + 156 =
971
2
4
3
|
20.
892 – 748 =
3
4
2
144
|