18+?=755,436+?=882,325+?=908
486-32=?,726-158=?,816-320=?
325+474=?,285+590=?,458+612=?
24*4=?,18*7=?,50*5=?
63/?=?,40/4=?,60/5=?
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?-334=758-428,154+216+373+185=?
764-215=?+467,354+125+208-642=?
151+?+387=911,465+278-163-380=?
236+?-415=265,999-326-298-317=?
要写字就烦