作业帮 > 数学 > 作业

17×36-650÷13,(405÷15-13)×16,910-(86+14×28,372-(17×14+42),(15

来源:学生作业帮 编辑:灵鹊做题网作业帮 分类:数学作业 时间:2024/05/10 21:47:55
17×36-650÷13,(405÷15-13)×16,910-(86+14×28,372-(17×14+42),(15+23)×32÷2,简便运算
50分悬赏
17×36-650÷13,(405÷15-13)×16,910-(86+14×28,372-(17×14+42),(15
17×36-650÷13
=17×4×9-50
=68×9-50
=612-50
=462
(405÷15-13)×16
=(405÷5÷3-13)×16
=(27-13)×16
=14×2×8
=224
再问: 你5道重发一遍,我就采纳你!!!!!!
再答: 17×36-650÷13 =17×4×9-50 =68×9-50 =612-50 =562 (405÷15-13)×16 =(405÷5÷3-13)×16 =(27-13)×16 =14×2×8 =224 910-(86+14×28) =910-(86+14×4×7) =910-(86+392) =910-478 =432 372-(17×14+42) =372-(17×14+3×14) =372-14×(17+3) =372-14×20 =372-280 =92 (15+23)×32÷2 =48×16 =(50-2)×16 =50×16-2×16 =800-32 =768