下列怎么简便计算（0.041x150-39.8x0.15-0.03)除15=0.999x0.6+0.111x3.6=3.6x31.4+43.9x6.4=88.88x888.8除(1+2+3+4+5+6+7+8+7+6+5+4+3+2+1)=

Question

下列怎么简便计算
（0.041x150-39.8x0.15-0.03)除15=
0.999x0.6+0.111x3.6=
3.6x31.4+43.9x6.4=
88.88x888.8除(1+2+3+4+5+6+7+8+7+6+5+4+3+2+1)=

Answer 1

1.（0.041x150-39.8x0.15-0.03)÷15
=(0.41x15-0.398x15-0.002x15)÷15
=0.41-0.398-0.002
=0.41-(0.398+0.002)
=0.41-0.40
=0.01
2.0.999x0.6+0.111x3.6
=0.111×5.4+0.111x3.6
=0.111×(5.4+3.6)
=0.111×10
=1.11
3.3.6x31.4+43.9x6.4
=(10-6.4)x31.4+43.9x6.4
=314-6.4x31.4+43.9x6.4
=314+6.4×(43.9-31.4)
=314+6.4×12.5
=314+8×125×0.08
=314+1000×0.08
=314+80
=394
4.88.88x888.8÷(1+2+3+4+5+6+7+8+7+6+5+4+3+2+1)
=88.88x888.8÷64
=8×11.11×8×111.1÷64
=11.11×111.1
=11.11×999.9÷9
=[11.11×(1000-0.1)]÷9
=(11110-1.111)÷9
=11108.889÷9
=1234.321