乘法交换律和乘法结合律判断下面各题是否正确,对的在括号里打“钩”,错的改正过来.(1)4×9×25=9×(4×25) ( ) (2)3×12×5=3×(12+5) ( )(3)16×25×5
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![乘法交换律和乘法结合律判断下面各题是否正确,对的在括号里打“钩”,错的改正过来.(1)4×9×25=9×(4×25) ( ) (2)3×12×5=3×(12+5) ( )(3)16×25×5](/uploads/image/z/1029842-26-2.jpg?t=%E4%B9%98%E6%B3%95%E4%BA%A4%E6%8D%A2%E5%BE%8B%E5%92%8C%E4%B9%98%E6%B3%95%E7%BB%93%E5%90%88%E5%BE%8B%E5%88%A4%E6%96%AD%E4%B8%8B%E9%9D%A2%E5%90%84%E9%A2%98%E6%98%AF%E5%90%A6%E6%AD%A3%E7%A1%AE%2C%E5%AF%B9%E7%9A%84%E5%9C%A8%E6%8B%AC%E5%8F%B7%E9%87%8C%E6%89%93%E2%80%9C%E9%92%A9%E2%80%9D%2C%E9%94%99%E7%9A%84%E6%94%B9%E6%AD%A3%E8%BF%87%E6%9D%A5.%EF%BC%881%EF%BC%894%C3%979%C3%9725%3D9%C3%97%EF%BC%884%C3%9725%29++++++++++++++++++++++%28+++++%29+%EF%BC%882%EF%BC%893%C3%9712%C3%975%3D3%C3%97%EF%BC%8812%EF%BC%8B5%EF%BC%89++++++++++++++++++++%EF%BC%88+++++%EF%BC%89%EF%BC%883%EF%BC%8916%C3%9725%C3%975)
乘法交换律和乘法结合律判断下面各题是否正确,对的在括号里打“钩”,错的改正过来.(1)4×9×25=9×(4×25) ( ) (2)3×12×5=3×(12+5) ( )(3)16×25×5
乘法交换律和乘法结合律
判断下面各题是否正确,对的在括号里打“钩”,错的改正过来.
(1)4×9×25=9×(4×25) ( )
(2)3×12×5=3×(12+5) ( )
(3)16×25×5×4=(25×4)+(16×5) ( )
(4)5×(20+6)=5×20+6 ( )
(5)9×6+4×6=(6+4)×9 ( )
乘法交换律和乘法结合律判断下面各题是否正确,对的在括号里打“钩”,错的改正过来.(1)4×9×25=9×(4×25) ( ) (2)3×12×5=3×(12+5) ( )(3)16×25×5
(1)4×9×25=9×(4×25) (√)
(2)3×12×5=3×(12+5) (×)3×(12×5)
(3)16×25×5×4=(25×4)+(16×5) (×) (25×4)×(16×5)
(4)5×(20+6)=5×20+6 (×)5×20+5×6
(5)9×6+4×6=(6+4)×9 (×)(4+9)×6