一道小学应用题(简便算法)能要我命的简算:⑴7-十二分之五×十五分之四+九分之二 ⑵十二分之十一-五分之一×六分之五+四分之五 ⑶(十二分之十七-六分之五)×七分之一
来源:学生作业帮助网 编辑:作业帮 时间:2024/11/18 10:31:48
一道小学应用题(简便算法)能要我命的简算:⑴7-十二分之五×十五分之四+九分之二 ⑵十二分之十一-五分之一×六分之五+四分之五 ⑶(十二分之十七-六分之五)×七分之一
一道小学应用题(简便算法)
能要我命的简算:⑴7-十二分之五×十五分之四+九分之二 ⑵十二分之十一-五分之一×六分之五+四分之五 ⑶(十二分之十七-六分之五)×七分之一
一道小学应用题(简便算法)能要我命的简算:⑴7-十二分之五×十五分之四+九分之二 ⑵十二分之十一-五分之一×六分之五+四分之五 ⑶(十二分之十七-六分之五)×七分之一
5/12*4/15+2/9=1/9+2/9=1/3
11/12-1/5*5/6+5/4=11/12-1/6+5/4=3/4+5/4=2
(17/12-5/6)*1/7=7/12*1/7=1/12
(1)
7-5/12*4/15+2/9
=7-1/9+2/9
=7+1/9
=7又1/9
(2)
11/12-1/5× 5/6+5/4
=11/12-1/6+5/4
=11-2+15/12
=24/12
=2
(3)
(17/12-5/6 )1/7
=17-10/12 ×1/7
=7/12×1/7
=1/12
7-5/12×4/15+2/9
=7-5×4/15×12+2/9
=7-1/9+2/9
=7+1/9
=7又1/9
11/12-1/5× 5/6+5/4
=11/12-1/6+5/4
=11-2+15/12
=24/12
=2
(17/12-5/6 )1/7
=17-10/12 ×1/7
=7/12×1/7
=1/12
7-5/12*4/15+2/9=7-1/9+2/9=7+1/9=7 1/9
11/12-1/5*5/6+4/5=11/12-1/6+4/5=3/4+4/5=1 11/20
(17/12-5/6)*1/7=7/12*1/7=1/12
(1)7-5/12*4/15+2/9
=7-1/9+2/9
=7+1/9
=7又1/9
(2)11/12-1/5*5/6+5/4
=11/12-1/6+5/4
=11/12-2/12+15/12
=9/12+15/12
=24/12
=2
(3)(17/12-5/6)*1/7
=(17/12-10/12)*1/7
=7/12*1/7
=1/12
(1)7-5/12*4/15+2/9
=7-1/9+2/9
=7+1/9
=7又1/9
(2)11/12-1/5*5/6+5/4
=11/12-1/6+5/4
=11/12-2/12+15/12
=9/12+15/12
=24/12
=2
(3)(17/12-5/6)*1/7
=(17/12-10/12)*1/7
=7/12*1/7
=1/12
7-5/12*4/15+2/9
=7-1/9+2/9
=7+1/9
=7又1/9
7-5/12×4/15+2/9
=7-20/180+2/9
=7-1/9+2/9
=7-1/9
11/12-1/5×5/6+4/5
=11/12-2/12+4/5
=9/12+4/5
=31/20
(17/12-5/6)×1/7
=7/12*1/7
=1/12