Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
493 – 5 =
2
488
|
2.
404 – 35 =
369
2
|
3.
460 – 424 =
2
36
|
4.
169 – 151 =
18
2
|
|
5.
99 + 111 =
2
210
|
6.
36 + 824 =
2
860
|
7.
848 + 87 =
935
2
|
8.
314 + 34 =
2
348
|
|
9.
893 – 270 =
2
623
|
10.
57 – 45 =
12
1
|
11.
372 + 611 =
2
983
|
12.
131 + 216 =
2
347
|
|
13.
519 + 294 =
813
2
|
14.
180 + 298 =
2
478
|
15.
249 + 680 =
929
2
|
16.
701 + 18 =
2
719
|
|
17.
818 + 111 =
2
929
|
18.
781 + 190 =
2
971
|
19.
964 – 604 =
2
360
|
20.
147 + 59 =
206
2
|