Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
717 + 69 =
786
2
|
2.
501 + 475 =
976
2
|
3.
286 + 354 =
640
2
|
4.
803 + 55 =
2
858
|
|
5.
965 – 315 =
2
650
|
6.
148 – 99 =
49
2
|
7.
127 – 116 =
11
1
|
8.
364 – 270 =
2
94
|
|
9.
251 + 188 =
439
2
|
10.
646 – 359 =
2
287
|
11.
456 – 355 =
101
2
|
12.
797 + 100 =
897
2
|
|
13.
206 + 788 =
2
994
|
14.
948 + 15 =
963
2
|
15.
700 – 256 =
2
444
|
16.
235 – 210 =
2
25
|
|
17.
106 – 81 =
2
25
|
18.
108 + 881 =
2
989
|
19.
115 + 143 =
2
258
|
20.
438 – 112 =
326
2
|