5000 + ___ = 5500

20 + ___ = 70

___ + 2000 = 2400

___ + 70 = 140

___ + 10 = 40

___ + 30 = 60

___ + 400 = 2400

___ - 700 = 0

___ + 400 = 7400

20 + ___ = 90

7000 - ___ = 6900

80 - ___ = 60

___ + 30 = 120

300 + ___ = 700

___ + 200 = 800

90 + ___ = 9090

900 + ___ = 3900

___ - 10 = 890

9000 - ___ = 2000

100 + ___ = 1100

500 - ___ = 0

3000 - ___ = 2930

2000 - ___ = 1400

___ + 90 = 110

50 + ___ = 750

900 + ___ = 1100

10 + ___ = 410

1000 - ___ = 500

500 + ___ = 550

___ - 60 = 540

___ + 50 = 100

100 - ___ = 70

___ + 600 = 1300

400 - ___ = 320

30 + ___ = 830

800 + ___ = 3800

___ + 500 = 5500

___ + 80 = 5080

___ + 1000 = 1600

___ + 700 = 750

___ + 80 = 170

___ - 200 = 500

6000 + ___ = 6300

___ + 100 = 120

___ + 6000 = 6090

900 - ___ = 300

___ - 400 = 4600

20 + ___ = 100

___ + 10 = 60

60 + ___ = 860

20 + ___ = 520

7000 - ___ = 6600

___ + 6000 = 6050

90 + ___ = 180

900 - ___ = 890

600 - ___ = 500