小学六年级数学题,求各位学霸!要过程,能简算的要简算!!!急急急!!!
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2016-05-12 · 知道合伙人教育行家
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2/7+1/5-1/7
=2/7-1/7+2/5
=1/7+2/5
=19/35
3.14×2.3+3.14×3.7
=3.14×(2.3+3.7)
=3.14×6
=18.84
12.5×(6.1+0.26)×8
=(12.5×8)×6.36
=100×6.36
=636
14/15×1/4+1/15÷4
=14/15×1/4+1/15×1/4
=(14/15+1/15)×1/4
=1×1/4
=1/4
930÷[1/2×(2/5+4/5)]
=930÷[1/2×6/5]
=930÷3/5
=1550
3又2/5×99+3.4
=3.4×99+3.4
=3.4×(99+1)
=3.4×100
=340
=2/7-1/7+2/5
=1/7+2/5
=19/35
3.14×2.3+3.14×3.7
=3.14×(2.3+3.7)
=3.14×6
=18.84
12.5×(6.1+0.26)×8
=(12.5×8)×6.36
=100×6.36
=636
14/15×1/4+1/15÷4
=14/15×1/4+1/15×1/4
=(14/15+1/15)×1/4
=1×1/4
=1/4
930÷[1/2×(2/5+4/5)]
=930÷[1/2×6/5]
=930÷3/5
=1550
3又2/5×99+3.4
=3.4×99+3.4
=3.4×(99+1)
=3.4×100
=340
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2016-05-12 · 知道合伙人教育行家
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