7.48+3.17-（2.48-6.83） 7.6x7/4+17.5x6/25 1333305/2x88+880x133

那一剑地风情2022-10-04 11:39:541条回答

7.48+3.17-（2.48-6.83） 7.6x7/4+17.5x6/25 1333305/2x88+880x133339/4
3.6x11.1+1.2x66.7 7.2x14.5+17x2.8 256x254/255+254x1/255
12.8x34.5+12.8x12.3+46.8x87.2

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feiquyueqiu 共回答了18个问题 | 采纳率94.4%: 7.48+3.17-（2.48-6.83）
=7.48-2.48+（3.17+6.83）
=5+10
=15
7.6x7/4+17.5x6/25
=7.6x1.75+1.75x2.4
=(7.6+2.4)x1.75
=10x1.75
=17.5
1333305/2x88+880x133339/4
=1333305x44+220x133339
=1333305x44+44x666695
=44x(1333305+666695)
=44x8000000
=352000000
3.6x11.1+1.2x66.7
=1.1x33.3+1.1x66.7
=1.1x(33.3+66.7)
=1.1x100
=110
7.2x14.5+17x2.8
=7.2x14+1.7x14+7.2x0.5
=(7.2+1.7)x14+3.6
=9.9x14+3.6
=10x14-9.9+3.6
=140-6.3
=133.7
256x254/255+254x1/255
=(256+1)x254/255
=257x(1-1/255)
=257-257/255
=255又253/255
12.8x34.5+12.8x12.3+46.8x87.2
=12.8x(34.5+12.3)+46.8x87.2
=12.8x46.8+46.8x87.2
=(12.8+87.2)x46.8
=100x46.8
=4680; 1年前

简便运算17.48+3.17-(2.48-6.83) 3.6*11.1+1.2*66.7 【*代表乘号】 12.8*34 简便运算1 7.48+3.17-(2.48-6.83) 3.6*11.1+1.2*66.7 【*代表乘号】 12.8*34.5+12.8*12.3+46.8*87.2 7.2*14.5+17*2.8 【 8 4/3】-.35+(【1 4/1】-【6 20/13】）注意；【8 4/3】等于8又4分之3.全部都是这样 fm9871年前5: qijianmail 共回答了20个问题 | 采纳率85%

7.48+3.17-(2.48-6.83)
=7.48+3.17-2.48+6.83
=（7.48-2.48）+（3.17+6.83）
=5+10
=15
3.6*11.1+1.2*66.7
=1.2*3*11.1+1.2*66.7
=1.2*33.3+1.2*66.7
=1.2*(33.3+66.7)
=1.2*100
=120
12.8*34.5+12.8*12.3+46.8*87.2
=12.8*(34.5+12.3)+46.8*87.2
=12.8*46.8+46.8*87.2
=46.8*(12.8+87.2)
=46.8*100
=4680
问题补充：
7.2*14.5+17*2.8
=7.2*（17-2.5）+17*2.8
=7.8*17-72*0.25+17*2.8
=17*（7.8+2.8）-72÷4
=17*10-18
=170-18
=152
【 8 4/3】-.35+(【1 4/1】-【6 20/13】）
=8.75-.35+1.25-6.65
=(8.75+1.25)-(6.65+0.35)
=10-7
=3

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7.48+3.17-（2.48-6.83） 7.6x7/4+17.5x6/25 1333305/2x88+880x133

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