Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
419 – 394 =
25
2
|
2.
86 + 853 =
939
2
|
3.
578 + 408 =
2
986
|
4.
344 – 328 =
16
2
|
|
5.
442 – 126 =
2
316
|
6.
476 – 71 =
405
2
|
7.
859 – 759 =
2
100
|
8.
210 – 69 =
2
141
|
|
9.
560 + 70 =
630
2
|
10.
90 + 319 =
2
409
|
11.
318 + 67 =
385
2
|
12.
617 – 239 =
378
2
|
|
13.
400 + 600 =
1000
2
|
14.
724 – 443 =
2
281
|
15.
634 – 352 =
282
2
|
16.
706 – 431 =
2
275
|
|
17.
686 – 296 =
390
2
|
18.
128 – 47 =
81
2
|
19.
629 + 340 =
969
2
|
20.
120 – 42 =
78
2
|