tolong dibantu 1-10ya

1.5(87-6+9)=5x90=450
2.3(46+54)=3(100)=300
3.87
4.4 x (9+1) = 4x10=40
5.(32+18)x2=40x2=80
6.(12+43+45)x3=100x3=300
7.50x(2x25)=50x50=2500
8.19x5x20=19x100=1900
9.50
10.25x40=1000