Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
259 + 183 =
2
442
|
2.
936 – 834 =
102
2
|
3.
887 + 71 =
2
958
|
4.
83 + 167 =
250
2
|
|
5.
771 + 19 =
2
790
|
6.
937 – 410 =
527
2
|
7.
450 + 60 =
510
2
|
8.
956 + 3 =
2
959
|
|
9.
25 – 18 =
7
1
|
10.
19 + 288 =
307
2
|
11.
750 – 16 =
734
2
|
12.
901 + 53 =
2
954
|
|
13.
341 + 31 =
372
2
|
14.
119 – 91 =
2
28
|
15.
965 – 520 =
445
2
|
16.
284 + 506 =
790
2
|
|
17.
157 – 1 =
156
2
|
18.
935 – 159 =
776
2
|
19.
972 + 22 =
994
2
|
20.
489 + 365 =
854
2
|