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简便计算 十万火急!分不够我多加!20:50就要下了

来源:学生作业帮 编辑:搜搜做题作业网作业帮 分类:数学作业 时间:2024/08/09 08:44:04
简便计算 十万火急!分不够我多加!20:50就要下了
1.三十六分之三十五x29
2.73x七十二分之二十三
3.49又十一分之一x六分之一
4.三分之二x46+三分之一x28
5.九分之一x十一分之三+九分之四x十一分之二
6.126又十五分之一除以31
7.2000除以2000又2001分之2000
8.七分之一x20+七分之四x16
9.33分之4x133
10.2001分之2000x2002
11.13又五分之一x六分之五+28又七分之二x九分之七
12.13分之4x2+13分之1x6+13分之2x6
13.11分之一x6+11分之3x7+2x11分之3
14.11分之5x20分之1+11分之3x2分之1+11分之5x5分之1
简便计算 十万火急!分不够我多加!20:50就要下了
35/36x29
=(1-1/36)x29
=29-29/36
=28+1-29/36
=28又7/36
73x23/72
=(72+1)x23/72
=23+23/72
=23又23/72
49又1/11x1/6
=(48+12/11)x1/6
=8+2/11
=8又2/11
2/3x46+1/3x28
=2/3x(45+1)+1/3x(27+1)
=30+2/3+9+1/3
=40
1/9x3/11+4/9x2/11=3/99+8/99
=11/99
=1/9
126又1/15÷31
=(124+31/15)÷31
=124÷31+31/15÷31
=4+1/15
=4又1/15
2000÷2000又2000/2001
=2000÷(2000+2000/2001)
=2000÷2000+2000÷2000/2001
=1+2001
=2002
1/7x20+4/7x16
=20/7+64/7
=84/7
=12
4/33x133
=4/33x(100+33)
=400/33+4
=12又4/33+4
=16又4/33
2000/2001x2002
=2000/2001x(2001+1)
=2000/2001x2001+2000/2001
=2000+2000/2001
=2000又2000/2001
13又1/5x5/6+28又2/7x7/9
=(12+6/5)x5/6+(27+9/7)x7/9
=12x5/6+6/5x5/6+27x7/9+9/7x7/9
=10+1+21+1
=33
再问: 最后一道题怎么做
再答: 4/13x2+1/13x6+2/13x6 =4/13x2+(1/13+2/13)x6 =4/13x2+3/13x6 =4/13x2+9/13x2 = (4/13+9/13)x2 =1x2 =2 1/11x6+3/11x7+2x3/11 =1/11x6+3/11x(7+2) =3/11x2+3/11x9 =3/11x(2+9) =3 5/11x1/20+3/11x1/2+5/11x1/5 =5/11x(1/20+1/5)+3/11x1/2 =5/11x(1/20+4/20)+3/11x1/2 =5/11x1/4+6/11x1/4 =(5/11+6/11)x1/4 =1x1/4 =1/4 不好意思,没能及时回答,昨天网络出现问题了,还是希望帮到你了。