4.6+2.4=7; 7.5-5=2.5; 0.6-0.2=0.4; 9.2-1.2=8;
5.4-2.5-1.4=1.5; 12-6.2-3.8=2; 1.7+0.43+3.3=5.43; 1-0.2-0.3=0.5. 故答案依次为:7,2.5,0.4,8,1.5,2,5.43,0.5.
4.6+2.4=7; 7.5-5=2.5; 0.6-0.2=0.4; 9.2-1.2=8;
5.4-2.5-1.4=1.5; 12-6.2-3.8=2; 1.7+0.43+3.3=5.43; 1-0.2-0.3=0.5. 故答案依次为:7,2.5,0.4,8,1.5,2,5.43,0.5.