Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
109 + 140 =
2
249
|
2.
265 – 145 =
2
120
|
3.
845 + 48 =
893
2
|
4.
827 + 58 =
2
885
|
|
5.
363 – 171 =
2
192
|
6.
816 – 213 =
603
2
|
7.
481 – 255 =
226
2
|
8.
106 – 1 =
105
2
|
|
9.
996 + 4 =
2
1000
|
10.
330 – 203 =
2
127
|
11.
68 – 42 =
26
2
|
12.
434 + 57 =
491
2
|
|
13.
135 + 190 =
325
2
|
14.
286 + 60 =
2
346
|
15.
183 + 14 =
197
2
|
16.
260 – 92 =
168
2
|
|
17.
376 – 300 =
76
2
|
18.
132 + 659 =
2
791
|
19.
193 – 137 =
2
56
|
20.
574 – 546 =
2
28
|