Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
981 + 5 =
986
2
|
2.
854 + 58 =
912
2
|
3.
385 – 334 =
2
51
|
4.
157 + 437 =
2
594
|
|
5.
314 + 345 =
2
659
|
6.
684 – 210 =
2
474
|
7.
816 + 89 =
905
2
|
8.
536 + 365 =
2
901
|
|
9.
921 + 57 =
2
978
|
10.
496 + 407 =
903
2
|
11.
164 – 26 =
138
2
|
12.
852 + 68 =
920
2
|
|
13.
135 + 587 =
2
722
|
14.
341 – 104 =
2
237
|
15.
598 – 330 =
268
2
|
16.
330 + 573 =
2
903
|
|
17.
337 – 175 =
2
162
|
18.
612 – 382 =
2
230
|
19.
950 + 25 =
2
975
|
20.
340 + 141 =
2
481
|