Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
732 – 242 =
490
2
|
2.
466 + 220 =
686
2
|
3.
505 + 495 =
2
1000
|
4.
317 + 87 =
2
404
|
|
5.
480 + 202 =
682
2
|
6.
251 + 747 =
2
998
|
7.
330 – 324 =
1
6
|
8.
16 + 86 =
102
2
|
|
9.
242 + 257 =
2
499
|
10.
656 + 136 =
2
792
|
11.
488 – 109 =
379
2
|
12.
692 + 96 =
788
2
|
|
13.
487 + 46 =
2
533
|
14.
532 – 197 =
335
2
|
15.
452 + 229 =
2
681
|
16.
202 + 53 =
2
255
|
|
17.
601 + 328 =
929
2
|
18.
64 + 534 =
598
2
|
19.
480 – 82 =
398
2
|
20.
18 + 90 =
108
2
|