1.6+3.8= 0.5+0.9= 4.6+4.3= 2.9+6.1=
0.25+0.34= 0.36+0.45= 0.72+0.18= 0.59+0.41=
3.8-1.4= 0.9-0.5= 4.6-4.3= 6.1-2.9=
0.37+0.15= 0.95-0.36= 0.43-0.38= 0.51-0.41=
0.7+0.03=
0.39-0.09=
125×8+30=
0.22+1.8=
10a-6a=
m×n×7=
3.2×100=
5.6÷1000=
0.5+0.6=
2.4+0.61=
5.6+4.4=
5.5-0.5=
1-0.05=
10-0.1=