发布网友
共1个回答
热心网友
6.3×10.3
=(6+0.3)(10+0.3)
=60+(10+6)×0.3+0.09
=60+4.8+0.09
=.
1.2×0.98
=1.2×(1-0.02)
=1.2-0.024
=1.176