Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
58 – 9 =
2
49
|
2.
370 – 278 =
2
92
|
3.
679 + 124 =
803
2
|
4.
235 – 54 =
2
181
|
|
5.
58 + 684 =
2
742
|
6.
469 + 342 =
2
811
|
7.
328 – 183 =
2
145
|
8.
302 + 690 =
992
2
|
|
9.
451 + 280 =
2
731
|
10.
644 – 513 =
2
131
|
11.
412 – 320 =
92
2
|
12.
607 + 218 =
2
825
|
|
13.
421 + 480 =
901
2
|
14.
825 – 281 =
2
544
|
15.
839 + 159 =
998
2
|
16.
911 + 0 =
2
911
|
|
17.
187 + 771 =
958
2
|
18.
239 – 173 =
2
66
|
19.
128 + 96 =
2
224
|
20.
357 – 143 =
2
214
|