求小学二年级口算，500不要连加连减，或越多约好，谢谢了

20+67= 35+34= 24+63= 52+36= 37+42=
36+35= 56+37= 46+24= 18+81= 54+33=
45+34= 54+33= 62+17= 50+26= 61+25=
25+63= 36+47= 13+72= 3+84= 35+42=
76+5= 37+38= 45+47= 32+18= 9+56=
49+44= 21+39= 65+35= 25+19= 31+48=
32+28= 29+30= 34+36= 28+14= 12+23=
56-22= 56-18= 50-24= 43-14= 88-62=
36+30= 59+40= 32+6= 89-5= 92-71=
67-39= 80-61= 35-8= 90-7= 65-23=
99-14= 74-34= 39-21= 98-8= 98-80=
43-25= 72-27= 32-11= 81-49= 78-38=
90-70= 91-25= 94-24= 35-17= 95-16=
90-3= 62-19= 98-13= 90-5= 64-15=
73-25= 50-38= 90-47= 30-11= 91-72=
41-34= 45-39= 45-34= 41-39= 16-3=
44-27= 42-24= 70-25= 90-69= 70-25=
69+21= 54+13= 18+23= 44+27= 50-36=
50+36= 62-25= 53-39= 71-19= 45+38=
62+25= 53+39= 71+19= 45-39= 28+34=
28+19= 37+28= 25+17= 46+25= 62+23=

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