Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
421 – 416 =
5
1
|
2.
127 – 15 =
2
112
|
3.
936 + 64 =
1000
2
|
4.
319 + 317 =
636
2
|
|
5.
3 + 977 =
2
980
|
6.
710 – 275 =
2
435
|
7.
762 + 72 =
2
834
|
8.
594 – 239 =
2
355
|
|
9.
613 – 263 =
350
2
|
10.
142 – 56 =
2
86
|
11.
453 – 216 =
2
237
|
12.
358 + 430 =
2
788
|
|
13.
608 – 569 =
39
2
|
14.
804 + 30 =
834
2
|
15.
843 + 36 =
879
2
|
16.
455 – 307 =
148
2
|
|
17.
801 – 604 =
197
2
|
18.
98 + 365 =
2
463
|
19.
964 – 577 =
2
387
|
20.
998 + 1 =
2
999
|