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简便运算.1.25×0.25×0.05×64=;0.525÷13.125÷4×85.2=;12+14+18+116=;142+156+172+190+1110=.
题目详情
简便运算. 1.25×0.25×0.05×64=______; | 0.525÷13.125÷4×85.2=______; | ||||||||||||||||||
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1.25×0.25×0.05×64=______;
0.525÷13.125÷4×85.2=______;
1.25×0.25×0.05×64=______;
0.525÷13.125÷4×85.2=______;
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▼优质解答
答案和解析
(1)1.25×0.25×0.05×64,
=(1.25×8)×(0.25×4)×(0.05×2),
=10×1×0.1,
=1;
(2)0.525÷13.125÷4×85.2,
=0.525÷(13.125×4)×85.2,
=0.525÷52.5×85.2,
=0.01×85.2,
=0.852;
(3)
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=(1.25×8)×(0.25×4)×(0.05×2),
=10×1×0.1,
=1;
(2)0.525÷13.125÷4×85.2,
=0.525÷(13.125×4)×85.2,
=0.525÷52.5×85.2,
=0.01×85.2,
=0.852;
(3)
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