99 X 99/100 46 X 43/44 ( 7/11- 3/8)X 88 48 X ( 1/12+ 1/10) 5/13 X 27 3/7- 6/13 X 3/7 11/26x53简便计算.
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99X99/10046X43/44(7/11-3/8)X8848X(1/12+1/10)5/13X273/7-6/13X3/711/26x53简便计算.99X99/10046X43/44(7/11-3
99 X 99/100 46 X 43/44 ( 7/11- 3/8)X 88 48 X ( 1/12+ 1/10) 5/13 X 27 3/7- 6/13 X 3/7 11/26x53简便计算.
99 X 99/100 46 X 43/44 ( 7/11- 3/8)X 88 48 X ( 1/12+ 1/10) 5/13 X 27 3/7- 6/13 X 3/7 11/26x53
简便计算.
99 X 99/100 46 X 43/44 ( 7/11- 3/8)X 88 48 X ( 1/12+ 1/10) 5/13 X 27 3/7- 6/13 X 3/7 11/26x53简便计算.
99×99/100=99×(1-1/100)=99-99/100=98又1/100
46×43/44=46×(1-1/44)=46-46/44=45又42/44=45又21/22
(7/11-3/8)×88=7/11×88-3/8×88=7×8-3×11=23
48×(1/12+1/10)=48×1/12+48×1/10=4+4.8=8.8
5/13×27=5/13×(26+1)=5/13×26+5/13×1=10+5/13=10又5/13
3/7-6/13×3/7=3/7×(1-6/13)=3/7×7/13=3/13
11/26×53=11/26×(52+1)=11/26×52+11/26×1=22+11/26=22又11/26
这是啥?我还没学到这程度。对不起,帮不了你。
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