Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
649 + 70 =
2
719
|
2.
167 + 310 =
2
477
|
3.
145 + 440 =
2
585
|
4.
667 – 663 =
4
1
|
|
5.
294 – 28 =
2
266
|
6.
229 + 320 =
549
2
|
7.
173 – 33 =
140
2
|
8.
293 – 155 =
2
138
|
|
9.
978 – 942 =
2
36
|
10.
935 – 455 =
480
2
|
11.
174 + 826 =
2
1000
|
12.
910 + 25 =
935
2
|
|
13.
734 + 201 =
2
935
|
14.
933 + 0 =
933
2
|
15.
358 – 152 =
2
206
|
16.
775 – 103 =
672
2
|
|
17.
167 + 395 =
562
2
|
18.
330 + 81 =
2
411
|
19.
866 – 315 =
551
2
|
20.
966 + 12 =
978
2
|