Oefenen met erbij en eraf tot 1.000
In de mix
|
1.
512 + 255 =
4
767
3
2
|
2.
501 – 127 =
374
2
4
3
|
3.
810 – 90 =
720
2
3
4
|
4.
63 + 647 =
4
3
2
710
|
|
5.
798 + 22 =
3
4
2
820
|
6.
314 – 236 =
78
4
3
2
|
7.
573 + 268 =
2
3
841
4
|
8.
421 + 173 =
4
2
3
594
|
|
9.
333 + 406 =
739
3
4
2
|
10.
774 + 89 =
863
2
3
4
|
11.
662 + 226 =
888
4
2
3
|
12.
46 – 15 =
4
2
3
31
|
|
13.
530 – 163 =
367
2
3
4
|
14.
471 + 426 =
4
3
2
897
|
15.
619 + 114 =
2
733
3
4
|
16.
167 – 72 =
2
3
4
95
|
|
17.
798 – 552 =
2
246
3
4
|
18.
133 – 104 =
4
3
2
29
|
19.
863 + 36 =
4
899
2
3
|
20.
712 + 242 =
954
2
3
4
|