Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
443 + 355 =
2
798
|
2.
215 – 55 =
160
2
|
3.
626 – 401 =
2
225
|
4.
445 – 135 =
2
310
|
|
5.
104 – 24 =
80
2
|
6.
690 – 555 =
135
2
|
7.
284 + 229 =
2
513
|
8.
926 – 757 =
2
169
|
|
9.
905 + 42 =
2
947
|
10.
965 + 13 =
2
978
|
11.
255 – 84 =
171
2
|
12.
4 – 2 =
1
2
|
|
13.
984 + 11 =
995
2
|
14.
792 – 475 =
317
2
|
15.
139 – 106 =
2
33
|
16.
826 + 147 =
973
2
|
|
17.
341 + 610 =
2
951
|
18.
698 – 235 =
463
2
|
19.
878 + 75 =
953
2
|
20.
936 – 42 =
2
894
|