Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
487 – 312 =
2
175
|
2.
894 + 54 =
2
948
|
3.
641 – 319 =
322
2
|
4.
890 – 61 =
829
2
|
|
5.
855 + 5 =
2
860
|
6.
929 – 558 =
2
371
|
7.
266 + 220 =
2
486
|
8.
451 – 333 =
2
118
|
|
9.
891 + 53 =
944
2
|
10.
923 – 57 =
2
866
|
11.
135 – 124 =
1
11
|
12.
270 + 180 =
2
450
|
|
13.
486 – 35 =
2
451
|
14.
98 – 30 =
68
2
|
15.
654 – 157 =
2
497
|
16.
236 – 111 =
125
2
|
|
17.
835 – 69 =
2
766
|
18.
5 – 1 =
4
1
|
19.
77 + 465 =
542
2
|
20.
955 – 714 =
241
2
|