问题 解答题 直抒胸臆:578+216=18.25-3.3=3.2-12=19×8.1=12+13=214÷3=0.99×9+0.99=214×127=112×8+112×2=21710÷7= 答案 578+216=794,18.25-3.3=14.95,3.2-12=2.7,19×8.1=0.9,12+13=56,214÷3=34,0.99×9+0.99=9.9,214×127=112,112×8+112×2=15,21710÷7=3110.