|
1.
568 – 80 =
2
488
|
2.
448 – 40 =
408
2
|
3.
345 – 20 =
2
325
|
4.
154 – 40 =
2
114
|
|
5.
999 – 10 =
2
989
|
6.
237 + 90 =
327
2
|
7.
227 – 40 =
2
187
|
8.
390 + 70 =
2
460
|
|
9.
640 – 70 =
2
570
|
10.
195 – 70 =
2
125
|
11.
151 + 40 =
191
2
|
12.
637 + 50 =
2
687
|
|
13.
529 + 50 =
2
579
|
14.
764 – 90 =
2
674
|
15.
877 + 10 =
2
887
|
16.
104 – 10 =
94
2
|
|
17.
612 – 80 =
2
532
|
18.
139 – 60 =
79
2
|
19.
177 + 50 =
2
227
|
20.
775 – 50 =
725
2
|
|
1.
568 – 80 =
2
488
|
2.
448 – 40 =
408
2
|
3.
345 – 20 =
2
325
|
4.
154 – 40 =
2
114
|
|
5.
999 – 10 =
2
989
|
6.
237 + 90 =
327
2
|
7.
227 – 40 =
2
187
|
8.
390 + 70 =
2
460
|
|
9.
640 – 70 =
2
570
|
10.
195 – 70 =
2
125
|
11.
151 + 40 =
191
2
|
12.
637 + 50 =
2
687
|
|
13.
529 + 50 =
2
579
|
14.
764 – 90 =
2
674
|
15.
877 + 10 =
2
887
|
16.
104 – 10 =
94
2
|
|
17.
612 – 80 =
2
532
|
18.
139 – 60 =
79
2
|
19.
177 + 50 =
2
227
|
20.
775 – 50 =
725
2
|