Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
904 + 73 =
977
2
|
2.
539 – 500 =
2
39
|
3.
542 – 536 =
6
1
|
4.
450 + 344 =
794
2
|
|
5.
371 + 449 =
2
820
|
6.
676 + 208 =
884
2
|
7.
10 + 83 =
93
2
|
8.
944 – 786 =
158
2
|
|
9.
949 + 19 =
968
2
|
10.
495 – 131 =
364
2
|
11.
844 + 50 =
894
2
|
12.
775 – 156 =
2
619
|
|
13.
216 – 150 =
2
66
|
14.
989 – 770 =
2
219
|
15.
521 – 23 =
498
2
|
16.
119 + 833 =
952
2
|
|
17.
505 – 297 =
208
2
|
18.
478 + 470 =
948
2
|
19.
981 – 726 =
2
255
|
20.
394 – 379 =
15
1
|