Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
375 + 372 =
2
747
|
2.
272 + 73 =
2
345
|
3.
271 + 454 =
2
725
|
4.
118 – 59 =
2
59
|
|
5.
500 + 105 =
2
605
|
6.
304 – 245 =
59
2
|
7.
65 – 15 =
50
2
|
8.
649 + 187 =
2
836
|
|
9.
838 – 562 =
276
2
|
10.
843 + 136 =
979
2
|
11.
445 – 256 =
2
189
|
12.
519 – 354 =
2
165
|
|
13.
316 + 495 =
2
811
|
14.
349 + 476 =
2
825
|
15.
274 + 574 =
848
2
|
16.
863 + 52 =
2
915
|
|
17.
89 + 811 =
900
2
|
18.
826 – 559 =
267
2
|
19.
23 + 808 =
831
2
|
20.
169 + 15 =
184
2
|