200+=851 654-=381 ÷18=23
0.711.709 0+430÷43
0.87元8元7角 625÷1000.625×10
25×4=
70-0=
4.35×10=
0.96-0.33=
4.36+5=
48.3÷10=
3.64+0.48= 54-9.63= 98.2-13.4=
101×87 77+2.7+2.3+23 169-25-25-50 10.75+1.88-9.25