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简便运算:4.56-2.87+5.44-3.13 468除以125除以8 3分之2乘28-19除以2分之3
人气:369 ℃ 时间:2019-10-31 01:17:49
解答
4.56-2.87+5.44-3.13
=4.56+5.44-(2.87+3.13)
=10-6
=4
468÷125÷8
=468÷(125×8)
=468÷1000
=0.468
3分之2乘28-19除以2分之3
=2/3×28-2/3×19
=2/3×(28-19)
=2/3×9
=6
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