Question

1

2

+

1

2

+3+4+

1

2

+3+4+…+

1

2

+3+4+…+10=______．

Answer 1

1

2

+

1

2

+3+4+

1

2

+3+4+…+

1

2

+3+4+…+10
=

1

2

×8+7×3+7×4+6×5+5×6+4×7+3×8+2×9+10
=4+21+28+30+30+28+24+18+10
=200．
故答案为：200．