(1)3/4+9又3/4+99又3/4+999又3/4 (2)(1/2-0.5)÷37+24×(7(1)3/4+9又3/4+99又3/4+999又3/4(2)(1/2-0.5)÷37+24×(7/8-1/3)(3)(16又7/8÷1.6875+2又1/5)×10/61(4)(1/6+0.875)×(1-1/3÷1/3)(5)【3/4÷(4/5+1/4)-4/7】×9/11(6)137×1997/1998(7)57.5-14.25-15

(1)3/4+9又3/4+99又3/4+999又3/4 (2)(1/2-0.5)÷37+24×(7(1)3/4+9又3/4+99又3/4+999又3/4(2)(1/2-0.5)÷37+24×(7/8-1/3)(3)(16又7/8÷1.6875+2又1/5)×10/61(4)(1/6+0.875)×(1-1/3÷1/3)(5)【3/4÷(4/5+1/4)-4/7】×9/11(6)137×1997/1998(7)57.5-14.25-15
(1)3/4+9又3/4+99又3/4+999又3/4 (2)(1/2-0.5)÷37+24×(7
(1)3/4+9又3/4+99又3/4+999又3/4
(2)(1/2-0.5)÷37+24×(7/8-1/3)
(3)(16又7/8÷1.6875+2又1/5)×10/61
(4)(1/6+0.875)×(1-1/3÷1/3)
(5)【3/4÷(4/5+1/4)-4/7】×9/11
(6)137×1997/1998
(7)57.5-14.25-15又3/4
(8)1/7×102.31+40又6/7×102.31
(9)2/5÷【5/8×(9/10+1/6)】
(10)
(5又2/5-1.8)÷【(1.15+13/20)×1又2/3】
(11)
【37.5+(1/5+1/3)×45】÷(7.05+6.45)
注：每一个算式都要写梯等事,发图也行,.“【”和“】”是中括号,越快越好,不要只是结果还要有过程,

(1)3/4+9又3/4+99又3/4+999又3/4 (2)(1/2-0.5)÷37+24×(7(1)3/4+9又3/4+99又3/4+999又3/4(2)(1/2-0.5)÷37+24×(7/8-1/3)(3)(16又7/8÷1.6875+2又1/5)×10/61(4)(1/6+0.875)×(1-1/3÷1/3)(5)【3/4÷(4/5+1/4)-4/7】×9/11(6)137×1997/1998(7)57.5-14.25-15
⑴=（9+99+999）+3/4×4
=1110
⑵=1÷37+24×13/24
=13又1/37
⑶=（10+2又1/5）×10/61
=61/5×10/61
=2
⑷=（1/6+0.875）×（1-1）
=0
⑸=（3/4÷21/20-4/7）×9/11
=（5/7-4/7）×9/11
=1/7×9/11
=9/77
⑹=136又1861/1998
⑺=57.5-（14.25+15.75）
=57-30
=27.5
⑻=102.31×（1/7+40又6/7）
=102.31×41
=4194.71
⑼=2/5÷（5/8×64/60）
=2/5÷（5/8×16/15）
=2/5÷2/3
=3/5
⑽=3.6÷（36/20×5/3）
=3.6÷3
=1.2
(11)=（37.5+8/15×45）÷13.5
=（37.5+24）÷13.5
=61.5÷13.5
=4又5/9