Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
347 + 256 =
603
2
|
2.
463 – 393 =
2
70
|
3.
189 + 148 =
2
337
|
4.
552 + 28 =
2
580
|
|
5.
195 – 30 =
165
2
|
6.
415 + 108 =
2
523
|
7.
422 – 41 =
381
2
|
8.
48 – 5 =
43
2
|
|
9.
109 + 30 =
2
139
|
10.
543 + 280 =
823
2
|
11.
426 + 475 =
901
2
|
12.
326 – 249 =
77
2
|
|
13.
330 – 98 =
2
232
|
14.
895 + 86 =
981
2
|
15.
522 – 329 =
193
2
|
16.
368 – 3 =
2
365
|
|
17.
968 + 30 =
2
998
|
18.
399 + 526 =
2
925
|
19.
293 – 127 =
166
2
|
20.
479 + 423 =
2
902
|