五年级分数简算题100条急————————————————!

1个回答

  • 1/5+4/21+3/5+8/21+1/21+8/21 7/5+2/3-2/5 23/18-2/9-7/18

    11/17+(6/17-5/12) 7/9-(2/9+1/4) 5/10-(1/10+2/9) 7/6-3/5-1/5

    5/7+3/11+8/11 3/14+1/5+9/13+4/5 7/8+1/7-3/8 1-1/9-8/9

    29/21-1+13/21 2/3+(4/17+1/3) 1/9-3/15+8/9 3/2-6/13-7/13

    8/15+1/6+7/15+5/6 7/9+3/5-(7/9+3/5) 6/23-10/21+17/23-11/21

    9/11+17/53-5/11 5/3-(2/3-1/8) 6/11-5/16+5/11-11/16 7/11-(3/7+1/6)

    7/8-3/5-1/5 5/8+7/9+3/8 17/18-2/5-1/5 4/13+1/5+6/13+4/5+3/13

    5/12+11/15-6/15+7/12 8/9-(1/5-1/9) 3/7+1/6+4/7 6/11+3/5+2/5+5/11

    2/5+1/3+3/5 1/4+1/3+1/4+2/3 7/9+1/8+3/8+5/7 7/17+3/8+10/17+5/8

    12/19+(7/19-3/8) 4/9-(4/5+1/3) 3/2-9/17-8/17 4/7+5/12+3/7

    5/6-2/9-7/9 4/15+7/18+11/15 7/9-(1/6+4/9) 5-(5/11-6/11)

    3/4-2/9+1/4 9/10-(1/10+2/5) 5/6-4/9+1/6-2/9 5/8+1/8-3/10-1/10