搜搜考试网89.3×43.38×89.3＋893×1.9能简算吗 要怎么简算
来源：学生作业帮 编辑：搜搜考试网作业帮 分类：数学作业 时间：2024/07/10 21:59:07
89.3×43.38×89.3＋893×1.9能简算吗 要怎么简算
89.3×43.38×89.3＋893×1.9
=89.3×43.38×89.3＋89.3×19
=89.3×(43.98×89.3+19)
=89.3×[43.98×(100-10.7)+19]
=89.3×(4398-43.98×10.7+19)
=89.3×[4417-43.98(10+1-0.3)]
=89.3×(4417-439.8-43.98+43.98×0.3)
=89.3×(4417-395.82+13.194)
=89.3×4034.374
=360269.5982
题目错了吧?
=89.3×43.38×89.3＋89.3×19
=89.3×(43.98×89.3+19)
=89.3×[43.98×(100-10.7)+19]
=89.3×(4398-43.98×10.7+19)
=89.3×[4417-43.98(10+1-0.3)]
=89.3×(4417-439.8-43.98+43.98×0.3)
=89.3×(4417-395.82+13.194)
=89.3×4034.374
=360269.5982
题目错了吧?