Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
3 – 2 =
2
1
|
2.
98 – 42 =
2
56
|
3.
2 – 0 =
1
2
|
4.
158 + 157 =
2
315
|
|
5.
418 – 375 =
43
2
|
6.
501 – 480 =
21
2
|
7.
306 + 522 =
2
828
|
8.
737 – 675 =
62
2
|
|
9.
528 + 170 =
2
698
|
10.
744 – 317 =
427
2
|
11.
92 + 688 =
780
2
|
12.
586 + 39 =
625
2
|
|
13.
659 – 325 =
2
334
|
14.
228 – 83 =
2
145
|
15.
94 – 59 =
35
2
|
16.
385 – 0 =
2
385
|
|
17.
36 – 20 =
2
16
|
18.
10 – 9 =
1
2
|
19.
3 + 1 =
4
1
|
20.
174 – 43 =
2
131
|