Rekensommen met erbij en eraf tot 1.000
In de mix
|
1.
490 – 487 =
1
3
|
2.
230 – 75 =
155
2
|
3.
347 + 56 =
403
2
|
4.
507 + 240 =
747
2
|
|
5.
608 + 15 =
623
2
|
6.
439 – 416 =
23
2
|
7.
820 – 588 =
2
232
|
8.
970 + 1 =
2
971
|
|
9.
626 + 73 =
2
699
|
10.
775 + 180 =
2
955
|
11.
713 + 55 =
2
768
|
12.
102 – 76 =
2
26
|
|
13.
70 – 12 =
2
58
|
14.
148 – 89 =
59
2
|
15.
641 + 58 =
699
2
|
16.
280 + 515 =
795
2
|
|
17.
888 – 717 =
2
171
|
18.
281 + 567 =
2
848
|
19.
254 – 102 =
2
152
|
20.
85 + 166 =
251
2
|