Question

计算下列各题

8.72×45.8÷8.72×8.72÷45.8÷8.72

4/6+9又4/5+99又4/5+999又4/5+9999又4/5

49.5×10又3/5-（50-1/2）×0.6

9又5/6×4.25+4又1/4÷6

3又1/4×4又3/5-4.6×2又1/4

2002×（2000/2001）

Answer 1

8.72×45.8÷8.72×8.72÷45.8÷8.72
=（8.72÷8.72）×（8.72÷8.72）×（45.8÷45.8）
=1*1*1
=1

4/6+9又4/5+99又4/5+999又4/5+9999又4/5
=4/6+（9+99+999+9999）+4/5+4/5+4/5+4/5
=4/6+11106+16/5
=20/30+11106+3+6/30
=11109+26/30
=11109又13/15

49.5×10又3/5-（50-1/2）×0.6
=49.5（10+0.6）-（50-0.5）*0.6
=49.5（10+0.6-0.6）
=495

9又5/6×4.25+4又1/4÷6
=59/6*4.25+4.251/6
=（59/6+1/6）*4.25
=10*4.25
=42.5

3又1/4×4又3/5-4.6×2又1/4
=3.25*4.6-4.6*2.25
=（3.25-2.25）*4.6
=4.6

2002×（2000/2001）
=2002*2000/2011

Answer 2

1、1