Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
514 – 251 =
263
2
|
2.
76 + 762 =
2
838
|
3.
961 + 31 =
992
2
|
4.
381 + 276 =
657
2
|
|
5.
680 + 250 =
2
930
|
6.
528 – 151 =
377
2
|
7.
203 – 143 =
60
2
|
8.
386 – 186 =
2
200
|
|
9.
775 + 177 =
2
952
|
10.
782 + 27 =
809
2
|
11.
428 – 388 =
40
2
|
12.
279 – 201 =
78
2
|
|
13.
330 – 136 =
194
2
|
14.
222 – 87 =
135
2
|
15.
108 + 221 =
2
329
|
16.
18 + 416 =
2
434
|
|
17.
159 – 0 =
2
159
|
18.
564 – 369 =
2
195
|
19.
132 – 8 =
2
124
|
20.
168 + 119 =
2
287
|