Question

(2.65+2.77)/(1.98-0.98)怎么简便计算

Answer 1

(2.65+2.77)/(1.98-0.98)怎么简便计算

(2.65+2.77)/(1.98-0.98）
=【2.62+（0.03+2.77）】/【（1+0.98）-0.98】
=【2.62+2.8】/【1-（0.98-0.98）】
=5.42/1
=5.42

(2.65+2.77)/(1.95-0.98)怎么简便计算

(2.65+2.77)/(1.98-0.98)
=(2.65+2.77)/1
=2.65+2.77
=2.65+2.35+0.42
=5+0.42
=5.42

1.98x47-0.98x47简便计算

1.98x47-0.98x47
解：简便计算
=（1.98-0.98）x47
=1x47
=47
祝学习进步。

1.98/125的简便计算

1.98/125
=(1.98*8)/(125*8)
=((2-0.02)*8)/1000
=(16-0.16)/1000
=15.84/1000
=0.01584

2.65/8+12.5简便计算

2.65/8+12.5
=2.65/8+（12.5×8）/8
=2.65/8+100/8
=102.65/8
=2053/160
=12.83125

0.98*4.6怎么简便计算

0.98*4.6
=（1-0.02）×4.6
=4.6×1-0.02×4.6
=4.6-0.092
=4.508

1/(1-0.98)简便计算

1/(1-0.98)
=1/0.02
=100/2
=50

3．85＋1．98怎么简便计算

3．85＋1．98
=3.85+（2-0.02）
=（3.85+2）-0.02
=5.85-0.02
=5.83
希望能帮到你！

0.98*12用简便计算怎么算

（1-0.02）×12
=12-0.24
=11.86

1.98^2 简便计算

(2-0.02)^2=2^2-2*2*0.02+0.02^2
=4-0.08+0.0004
=3.9204
貌似更麻烦