Oefenen met erbij en eraf tot 1.000
In de mix
|
1.
989 + 1 =
4
3
2
990
|
2.
334 + 340 =
3
4
674
2
|
3.
379 – 183 =
3
2
4
196
|
4.
477 – 71 =
406
4
2
3
|
|
5.
637 – 57 =
3
4
580
2
|
6.
631 – 455 =
3
4
176
2
|
7.
214 + 515 =
729
4
2
3
|
8.
881 – 11 =
4
3
2
870
|
|
9.
219 – 138 =
2
81
3
4
|
10.
750 + 232 =
2
3
982
4
|
11.
739 – 576 =
163
3
2
4
|
12.
791 + 88 =
2
4
879
3
|
|
13.
625 + 367 =
992
3
2
4
|
14.
515 + 289 =
804
3
2
4
|
15.
932 + 25 =
3
4
957
2
|
16.
223 – 185 =
2
4
3
38
|
|
17.
949 + 2 =
951
4
3
2
|
18.
750 – 399 =
4
351
2
3
|
19.
948 + 24 =
3
2
4
972
|
20.
755 + 135 =
3
890
4
2
|