要简便算法,1:8/9×(9+3/4)-2/3 2:7/8÷2/3+7/8×1/2 3:4-2/5÷8/15-1/44:7/8+2/3÷4/5+1/6 5:6-5/12×9/10-13/8 6:4/5+5/8÷1/4+1/2 7:2-8/9×3/4-1/3 10:4/9+2/7+5/18÷1/2 11:4-8/15÷2/3-1/5
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/02 05:52:33
![要简便算法,1:8/9×(9+3/4)-2/3 2:7/8÷2/3+7/8×1/2 3:4-2/5÷8/15-1/44:7/8+2/3÷4/5+1/6 5:6-5/12×9/10-13/8 6:4/5+5/8÷1/4+1/2 7:2-8/9×3/4-1/3 10:4/9+2/7+5/18÷1/2 11:4-8/15÷2/3-1/5](/uploads/image/z/249489-9-9.jpg?t=%E8%A6%81%E7%AE%80%E4%BE%BF%E7%AE%97%E6%B3%95%2C1%EF%BC%9A8%2F9%C3%97%EF%BC%889%EF%BC%8B3%2F4%EF%BC%89-2%2F3+2%EF%BC%9A7%2F8%C3%B72%2F3%EF%BC%8B7%2F8%C3%971%2F2+3%EF%BC%9A4-2%2F5%C3%B78%2F15-1%2F44%EF%BC%9A7%2F8%2B2%2F3%C3%B74%2F5%EF%BC%8B1%2F6+5%EF%BC%9A6-5%2F12%C3%979%2F10-13%2F8+6%3A4%2F5%EF%BC%8B5%2F8%C3%B71%2F4%EF%BC%8B1%2F2+7%EF%BC%9A2-8%2F9%C3%973%2F4-1%2F3+10%3A4%2F9%2B2%2F7%2B5%2F18%C3%B71%2F2+11%3A4-8%2F15%C3%B72%2F3-1%2F5)
要简便算法,1:8/9×(9+3/4)-2/3 2:7/8÷2/3+7/8×1/2 3:4-2/5÷8/15-1/44:7/8+2/3÷4/5+1/6 5:6-5/12×9/10-13/8 6:4/5+5/8÷1/4+1/2 7:2-8/9×3/4-1/3 10:4/9+2/7+5/18÷1/2 11:4-8/15÷2/3-1/5
要简便算法,1:8/9×(9+3/4)-2/3 2:7/8÷2/3+7/8×1/2 3:4-2/5÷8/15-1/4
4:7/8+2/3÷4/5+1/6 5:6-5/12×9/10-13/8 6:4/5+5/8÷1/4+1/2 7:2-8/9×3/4-1/3 10:4/9+2/7+5/18÷1/2 11:4-8/15÷2/3-1/5
要简便算法,1:8/9×(9+3/4)-2/3 2:7/8÷2/3+7/8×1/2 3:4-2/5÷8/15-1/44:7/8+2/3÷4/5+1/6 5:6-5/12×9/10-13/8 6:4/5+5/8÷1/4+1/2 7:2-8/9×3/4-1/3 10:4/9+2/7+5/18÷1/2 11:4-8/15÷2/3-1/5
1:8/9×(9+3/4)-2/3=8/9×9+8/9×3/4-2/3=8+2/3-2/3=8 2:7/8÷2/3+7/8×1/2=7/8×3/2+7/8×1/2=7/8×(3/2+1/2)=7/8×2=7/4 3:4-2/5÷8/15-1/4=4-2/5×15/8-1/4=4-3/4-1/4=4-(3/4+1/4)=4-1=3 4:7/8+2/3÷4/5+1/6=7/8+2/3×5/4+1/6=7/8+5/6+1/6=7/8+1=15/8 5:6-5/12×9/10-13/8 =6-3/8-13/8=6-(3/8+13/8)=6-2=4 6:4/5+5/8÷1/4+1/2=4/5+5/8×4+1/2=4/5+5/2+1/2=4/5+3=19/5 7:2-8/9×3/4-1/3=2-2/3-1/3=2-(2/3+1/3)=2-1=1 10:4/9+2/7+5/18÷1/2=4/9+2/7+5/18×2=4/9+2/7+5/9=4/9+5/9+2/7=1+2/7=9/7 11:4-8/15÷2/3-1/5=4-8/15×3/2-1/5=4-4/5-1/5=4-(4/5+1/5)=4-1=3 口算的,你回去检验下吧
8/9×(9+3/4)-2/32=8/9*9+8/9*3/4-1/16=8+(2/3-1/16)=8又29/48
我X,这个还要简便方法。我砸觉得直接算就是最简便的、。、、
7/8+2/3*5/4+1/6=7/8+5/6+1/6=15/8