Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
413 + 7 =
420
2
|
2.
912 + 8 =
2
920
|
3.
946 + 17 =
963
2
|
4.
998 + 2 =
1000
2
|
|
5.
303 – 81 =
2
222
|
6.
823 + 90 =
913
2
|
7.
828 + 79 =
2
907
|
8.
681 – 395 =
286
2
|
|
9.
948 – 917 =
2
31
|
10.
114 – 46 =
2
68
|
11.
354 – 236 =
118
2
|
12.
616 – 237 =
379
2
|
|
13.
447 + 53 =
500
2
|
14.
71 + 651 =
2
722
|
15.
199 – 170 =
2
29
|
16.
778 + 179 =
2
957
|
|
17.
425 + 130 =
2
555
|
18.
318 – 73 =
245
2
|
19.
492 + 221 =
713
2
|
20.
408 + 432 =
840
2
|