Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
994 + 0 =
2
994
|
2.
75 – 27 =
2
48
|
3.
511 + 170 =
2
681
|
4.
273 – 108 =
165
2
|
|
5.
435 + 75 =
2
510
|
6.
119 + 845 =
964
2
|
7.
786 + 37 =
823
2
|
8.
828 – 88 =
740
2
|
|
9.
349 + 110 =
2
459
|
10.
557 + 421 =
978
2
|
11.
21 – 3 =
2
18
|
12.
626 + 90 =
716
2
|
|
13.
53 – 3 =
2
50
|
14.
817 + 64 =
2
881
|
15.
488 – 415 =
73
2
|
16.
493 + 27 =
2
520
|
|
17.
971 – 265 =
2
706
|
18.
654 + 316 =
2
970
|
19.
763 + 152 =
915
2
|
20.
266 + 90 =
356
2
|