4-1.6=
3.6÷2=
1-=
0.1-0.01=
15+1.45=
+=
0.5×0.8=
3.5+0.7=
1.5×3=
3+4×0.2=
13+57= 2.4+5.8= 14.6-0.4= 3-0.6 = 0÷104=
61×7= 5÷50= 80×1.25= 13 + 23 = 5+ 16 =