1.2*8.3用简便方法计算.拜托各位大神
问题描述:
1.2*8.3用简便方法计算.拜托各位大神
答
1.2×8.3 ① 1.2×8.3=1×8.3+0.2×8.3=8.3+1.66=9.96 ② 1.2×8.3=1.2×8+1.2×0.3=9.6+0.36=9.96
1.2*8.3用简便方法计算.拜托各位大神
1.2×8.3 ① 1.2×8.3=1×8.3+0.2×8.3=8.3+1.66=9.96 ② 1.2×8.3=1.2×8+1.2×0.3=9.6+0.36=9.96