Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
151 + 213 =
2
364
|
2.
666 – 127 =
539
2
|
3.
978 + 17 =
2
995
|
4.
483 – 42 =
441
2
|
|
5.
971 – 791 =
180
2
|
6.
769 + 134 =
903
2
|
7.
595 + 180 =
775
2
|
8.
978 + 2 =
2
980
|
|
9.
255 – 247 =
1
8
|
10.
142 + 242 =
2
384
|
11.
958 + 18 =
2
976
|
12.
618 + 221 =
2
839
|
|
13.
392 + 269 =
661
2
|
14.
192 + 380 =
2
572
|
15.
925 + 37 =
2
962
|
16.
257 – 151 =
2
106
|
|
17.
682 + 56 =
738
2
|
18.
729 – 491 =
238
2
|
19.
640 + 186 =
2
826
|
20.
485 + 404 =
889
2
|