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blandet
100

12*2

= 24

100

10+13

=23

100

22-25

-3

100

30:3

=10

100

27:9

=3

200

4*50

=200

200

102+23

=125

200

47-17

=30

200

30:5

=6

200

33+40

=73

300

60*3

=180

300

257+600

=857
300

100-67

=33

300

350:7

=50

300

470-485

=-15

400

16*5

=80

400

42+58+125

225

400

477-312

=165

400

750:10

=75
400

756*2

=1512

500

23*9

=207

500

130+120+250

=500

500

742-366

=376

500

720:15

=48

500

1755-1387

=368