Question

简便计算......

1. 4.5*1.99+0.045
2. 25.2/1.2+16.75
3. 0.4*[(10-0.34)*0.25]
4. 270-1.8/0.18*32
5. (57.2-35.8)*(0.54*0.06)
6. 30.8*[1.6*(6.34-4.59)]
7. [6.48*(48.6+5.4)]*0.12
8. 8.4*[1.28-(1.54-0.31)]
9. [(8.1-6.6)/0.8]*1.4
10. 8.3*(50-90.4/5.9)

有没有人回答啊？！！！

Answer 1

1. 4.5*1.99+0.045
=4.5*1.99+4.5*0.01
=4.5*（大差脊罩1.99+0.01）
=4.5*2
=9

2. 25.2/滚野皮1.2+16.75
=21+16.75
=37.75

Answer 2

4.5*1.99+0.045
=4.5x1.99+4.5x0.01
=4.5x(1.99+0.01)
=4.5x2
=9

25.2/1.2+16.75
=(24+1.2)/1.2+16.75
=20+1+16.75
=37.75

Answer 3

（24+1.2）/颤大1.2+16.75
=24/茄手竖1.2+1.2/薯此1.2+16.75
=20+1+16.75
=37.75