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递等式计算(能巧算的要巧算).320+80×1518.62-3.44-8.52(5.2+8.35)+(4.8+1.65)72000÷(50×36)99×0.625+0.62528000÷12550.6-(1.8×10+15÷100)7332÷[68+(165-157)×11]

题目详情
递等式计算(能巧算的要巧算).
320+80×15         

18.62-3.44-8.52         
(5.2+8.35)+(4.8+1.65)72000÷(50×36)
99×0.625+0.625         28000÷125
50.6-(1.8×10+15÷100)7332÷[68+(165-157)×11]
▼优质解答
答案和解析
(1)320+80×15
=320+1200
=1520;

(2)18.62-3.44-8.52
=18.62-8.52-3.44
=10.1-3.44
=6.66;

(3)(5.2+8.35)+(4.8+1.65)
=(5.2+4.8)+(8.35+1.65)
=10+10
=20;

(4)72000÷(50×36)
=72000÷36÷50
=2000÷50
=40;

(5)99×0.625+0.625 
=(99+1)×0.625
=100×0.625
=62.5;

(6)28000÷125
=(28000×8)÷(125×8)
=224000÷1000
=224;

(7)50.6-(1.8×10+15÷100)
=50.6-(18+0.15)
=50.6-18.15
=32.45;

(8)7332÷[68+(165-157)×11]
=7332÷[68+8×11]
=7332÷[68+88]
=7332÷156
=47.