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big brain
150

12+13+5+70=

100

150

1000-200-400-350=

50

150

50/5/2=

5

150

2x5x10=

100

150

1260-35.3-24.7/2x3-800.1

999.9

200

120+60+31.9+8=

199.9

200

1356-50-306-999.9=

0.1

200

1200/2/6/10=

10

200

13x3x2=

78

200

2000/10-300+1800-700/2=

500