1.4+2.8=4.2 1.5+3=4.5 1.6+3.2=4.8 1.7+3.4=5.1 1.8+3.6=5.4 1.9+3.8=5.7 0.2+0.40=0.6 2.1+4.2=6.3 2.2+4.4=6.6 2.3+4.6=6.92.4+4.8=7.22.5+5=7.52.6+5.2=7.8