Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
86 – 86 =
2
0
|
2.
459 – 153 =
2
306
|
3.
728 – 601 =
2
127
|
4.
664 – 77 =
2
587
|
|
5.
550 + 20 =
570
2
|
6.
140 – 6 =
134
2
|
7.
607 – 504 =
2
103
|
8.
51 – 44 =
7
1
|
|
9.
112 + 125 =
2
237
|
10.
749 – 191 =
2
558
|
11.
375 + 373 =
2
748
|
12.
121 – 95 =
26
2
|
|
13.
85 – 56 =
2
29
|
14.
425 + 283 =
2
708
|
15.
556 + 226 =
782
2
|
16.
466 + 509 =
975
2
|
|
17.
63 – 51 =
12
1
|
18.
582 + 33 =
2
615
|
19.
874 + 117 =
2
991
|
20.
564 – 137 =
427
2
|