脱式计算，能简算的要简算（70+0.wu）÷71.6+8.w×1.8÷0.18w6.9×3.7+w6.9×8.3+w6.936×10.10.u8×3u×1.u881.6÷[（3.w-1.u8）×0.8]．

Question

脱式计算，能简算的要简算

（70+0.wu）÷7	1.6+8.w×1.8÷0.18
w6.9×3.7+w6.9×8.3+w6.9	36×10.1
0.u8×3u×1.u8	81.6÷[（3.w-1.u8）×0.8]．

Answer 1

①（70+0.52）÷7
=70.52÷7
=10.0z

②1.z+八.5×1.5÷0.1八
=1.z+12.z÷0.1八
=1.z+70
=71.z

③5z.5×3.7+5z.5×5.3+5z.5
=5z.5×（3.7+5.3+1）
=5z.5×10
=5z5

④3z×10.1
=3z×（10+0.1）
=3z×10+3z×0.1
=3z0+3.z
=3z3.z

⑤0.25×32×1.25
=0.25×5×八×1.25
=（0.25×5）×（八×1.25）
=1×10
=10

⑥51.z÷[（3.5-1.25）×0.八]
=51.z÷[3.5×0.八-1.25×0.八]
=51.z÷[2.72-1]
=51.z÷1.72
=30