Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
889 + 90 =
979
2
|
2.
842 + 6 =
848
2
|
3.
92 + 774 =
2
866
|
4.
195 – 27 =
2
168
|
|
5.
559 – 114 =
445
2
|
6.
62 + 938 =
2
1000
|
7.
451 – 429 =
22
2
|
8.
962 – 131 =
831
2
|
|
9.
968 – 343 =
2
625
|
10.
650 – 399 =
2
251
|
11.
860 + 89 =
2
949
|
12.
481 – 101 =
2
380
|
|
13.
845 – 702 =
2
143
|
14.
821 + 169 =
990
2
|
15.
700 – 55 =
645
2
|
16.
20 + 377 =
397
2
|
|
17.
203 + 171 =
374
2
|
18.
96 – 55 =
41
2
|
19.
843 + 86 =
929
2
|
20.
983 – 196 =
787
2
|