Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
735 + 242 =
2
977
|
2.
144 – 9 =
2
135
|
3.
225 + 271 =
496
2
|
4.
187 + 10 =
2
197
|
|
5.
456 + 418 =
2
874
|
6.
450 + 293 =
2
743
|
7.
318 – 274 =
44
2
|
8.
664 – 222 =
2
442
|
|
9.
982 – 169 =
813
2
|
10.
447 + 78 =
525
2
|
11.
187 – 121 =
2
66
|
12.
172 + 12 =
184
2
|
|
13.
162 + 543 =
705
2
|
14.
514 – 91 =
423
2
|
15.
283 + 236 =
2
519
|
16.
992 – 440 =
552
2
|
|
17.
577 + 17 =
594
2
|
18.
695 – 1 =
694
2
|
19.
156 – 112 =
44
2
|
20.
15 + 759 =
2
774
|