Medium Matchstick Puzzles

#574: Fix 9+7=13 medium #577: Fix 6+5=14 medium #580: Fix 9-0=7 medium #582: Fix 2+9=18 medium #590: Fix 6+5=0 medium #603: Fix 8-0=5 medium #605: Fix 9-2=8 medium #608: Fix 9+5=12 medium #611: Fix 6+7=9 medium #613: Fix 9-7=9 medium #614: Fix 7+3=12 medium #620: Fix 6+0=13 medium #624: Fix 7-1=8 medium #629: Fix 5+8=6 medium #633: Fix 0+7=1 medium #637: Fix 9-7=0 medium #638: Fix 1-6=7 medium #642: Fix 9+6=12 medium #645: Fix 0+5=8 medium #646: Fix 8+2=16 medium #650: Fix 3+6=17 medium #653: Fix 5+9=16 medium #654: Fix 0+8=18 medium #656: Fix 1+1=6 medium #658: Fix 8+7=1 medium #660: Fix 5+0=6 medium #663: Fix 5-6=8 medium #665: Fix 5+9=12 medium #666: Fix 4-1=6 medium #667: Fix 5-6=1 medium #668: Fix 0+6=2 medium #670: Fix 0+8=5 medium #673: Fix 0+1=8 medium #674: Fix 7+6=15 medium #675: Fix 6+3=17 medium #677: Fix 0+7=13 medium #682: Fix 1-7=6 medium #690: Fix 5+0=8 medium #693: Fix 4+6=13 medium #694: Fix 0-7=1 medium #696: Fix 6+3=12 medium #701: Fix 6+8=18 medium #706: Fix 7+6=12 medium #709: Fix 6+0=15 medium #710: Fix 5+5=16 medium #711: Fix 2+9=12 medium #713: Fix 6+0=12 medium #714: Fix 2+0=18 medium