5.4×多少等于多少?
发布网友
发布时间：2024-04-06 03:20
共1个回答
热心网友
时间：2024-04-14 20:40
=5.4×[（1.3+2.15）÷1/2]
=5.4×[（1.3+2.15）×2]
=5.4×[1.3×2+2.15×2]
=5.4×[2.6+4.3]
=5.4×6.9
=（5+0.4）×（7-0.1）
=5×7-0.1×5+7×0.4-0.4×0.1
=35-0.5+2.8-0.04
=37.8-0.54
=37.26
