Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
276 + 387 =
2
663
|
2.
328 – 104 =
224
2
|
3.
481 – 174 =
2
307
|
4.
777 – 638 =
2
139
|
|
5.
978 – 683 =
2
295
|
6.
283 – 62 =
2
221
|
7.
878 + 0 =
2
878
|
8.
14 + 110 =
2
124
|
|
9.
234 + 342 =
576
2
|
10.
871 + 110 =
981
2
|
11.
342 + 533 =
2
875
|
12.
228 + 709 =
2
937
|
|
13.
741 – 45 =
696
2
|
14.
978 + 12 =
990
2
|
15.
176 – 70 =
2
106
|
16.
872 + 93 =
2
965
|
|
17.
170 – 60 =
110
2
|
18.
280 – 65 =
2
215
|
19.
246 – 105 =
2
141
|
20.
346 – 31 =
315
2
|