Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
441 – 290 =
151
2
|
2.
470 – 329 =
2
141
|
3.
602 – 474 =
128
2
|
4.
517 – 419 =
98
2
|
|
5.
700 – 685 =
1
15
|
6.
488 – 388 =
2
100
|
7.
575 – 172 =
403
2
|
8.
639 + 241 =
880
2
|
|
9.
47 + 376 =
2
423
|
10.
330 – 58 =
272
2
|
11.
246 + 119 =
365
2
|
12.
992 – 407 =
2
585
|
|
13.
661 + 264 =
2
925
|
14.
493 – 402 =
2
91
|
15.
866 + 7 =
873
2
|
16.
706 + 13 =
719
2
|
|
17.
956 – 427 =
529
2
|
18.
550 – 73 =
477
2
|
19.
681 – 5 =
2
676
|
20.
143 – 19 =
124
2
|