Rekensommen met erbij en eraf tot 1.000
In de mix
|
1.
299 – 145 =
154
2
|
2.
225 + 668 =
2
893
|
3.
484 – 229 =
2
255
|
4.
840 – 112 =
2
728
|
|
5.
23 + 27 =
50
2
|
6.
492 + 319 =
811
2
|
7.
224 – 187 =
37
2
|
8.
842 – 730 =
112
2
|
|
9.
142 + 136 =
2
278
|
10.
484 – 79 =
405
2
|
11.
475 + 11 =
486
2
|
12.
358 – 261 =
97
2
|
|
13.
223 + 126 =
2
349
|
14.
744 – 284 =
2
460
|
15.
228 – 91 =
2
137
|
16.
263 – 134 =
2
129
|
|
17.
878 – 406 =
2
472
|
18.
558 – 331 =
227
2
|
19.
555 + 345 =
900
2
|
20.
750 – 178 =
2
572
|