4×0.5×0.25 0.4×16×0.25 0.35×99-0.35×9 23.6-4.5÷0.3 11.25÷7.5×2.3 如何简算?

来源:学生作业帮助网 编辑:作业帮 时间:2024/05/06 01:21:15

4×0.5×0.25 0.4×16×0.25 0.35×99-0.35×9 23.6-4.5÷0.3 11.25÷7.5×2.3 如何简算?
4×0.5×0.25 0.4×16×0.25 0.35×99-0.35×9 23.6-4.5÷0.3 11.25÷7.5×2.3 如何简算?

4×0.5×0.25 0.4×16×0.25 0.35×99-0.35×9 23.6-4.5÷0.3 11.25÷7.5×2.3 如何简算?
4×0.5×0.25
=(4×0.25)×0.5
=1×0.5
=0.5
0.4×16×0.25
=(0.4×0.25)×16
=0.1×16
=1.6
0.35×99-0.35×9
=0.35×(99-9)
=0.35×90
=31.5
23.6-4.5÷0.3
=23.6-15
=8.6
11.25÷7.5×2.3
=1.5×2.3
=3.45