Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
790 – 431 =
359
2
|
2.
962 + 10 =
972
2
|
3.
84 + 318 =
402
2
|
4.
275 + 372 =
647
2
|
|
5.
728 – 103 =
2
625
|
6.
877 + 14 =
2
891
|
7.
825 – 195 =
630
2
|
8.
801 – 538 =
2
263
|
|
9.
659 – 365 =
294
2
|
10.
733 + 113 =
2
846
|
11.
707 + 266 =
973
2
|
12.
710 + 112 =
2
822
|
|
13.
634 + 231 =
2
865
|
14.
687 – 72 =
615
2
|
15.
458 – 451 =
1
7
|
16.
111 – 88 =
23
2
|
|
17.
968 – 125 =
2
843
|
18.
70 + 550 =
620
2
|
19.
568 + 229 =
2
797
|
20.
944 – 444 =
2
500
|