420-99= 15×30= 0.01×1000= 25÷5×8=
8÷1000= 3.14×10= 5.17÷100= 35+24-12=
678- 122-78
0.99 ×1.10.99 6.626.602 23.9÷100.239×10
0.2分米2厘米 8.6×0.988.6 7.2×0.017.2×0.1
56+44×0÷4= 145-45×2= 3.2-2= 12×9+12=
0÷0.125= 6.3×100= 10-7.25-1.75= 25×9÷25×9=
32×2= 0÷26= 3.7+4.3= 1-0.6=
0.32×1000= 0.86÷10= 0.96-0.23= 0.52+0.4=
2.5×20=
9.7-7=
91÷1000=
1-0.37=
125×0.08=
0.5+1.04=
65.8×100=
2.6吨+400千克=