Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
2 + 643 =
2
645
|
2.
757 + 200 =
2
957
|
3.
895 + 90 =
985
2
|
4.
62 + 780 =
842
2
|
|
5.
905 + 19 =
924
2
|
6.
392 – 27 =
365
2
|
7.
948 + 7 =
2
955
|
8.
245 + 203 =
2
448
|
|
9.
998 + 0 =
2
998
|
10.
301 – 138 =
163
2
|
11.
109 – 11 =
98
2
|
12.
281 – 35 =
246
2
|
|
13.
67 + 170 =
237
2
|
14.
485 – 127 =
358
2
|
15.
119 – 94 =
25
2
|
16.
821 – 702 =
2
119
|
|
17.
178 + 302 =
480
2
|
18.
974 – 44 =
2
930
|
19.
116 – 12 =
2
104
|
20.
884 – 374 =
510
2
|