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Double Zero
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Pancake (flip the equation)
What's my missing part
100

200 - 100 =

100

100

82 - 11

71

100

85 + 12 =

97

100

100 + 100 = 200

200 - 100 = 100

100

______ + 10 = 54

44

200

300 - 150 =

150

200

115 - 10 =

105

200

620 + 48 =

668

200

132 - 20 = 112

112 + 20 = 132

or 

20 + 112 = 132

200

129 - _______ = 89

40

300

400 -283 =

117

300

864 -415 

449

300

789 + 199 =

988

300

625 - 102 = 

593 + 102 = 625

or

102 + 593 = 625

300

199 + ____________ = 379

180

400

600- 457 =

143

400

598 - 329

269

400

754 + 169 =

923

400

554 + 288 =

842 -554 = 288 or 

842 - 288 = 554

400

__________ = 929 - 554

375

500

900 - 739 =

161

500

624 - 193

431

500

398 + 592 =

990

500

929 - 137 = 

792 + 137 = 929

or 

137 + 792 = 929

500

___________ = 786- 298

488