24乘以125
=3x8x125
=3x(8x125)
=3x1000
=3000
28乘以2乘以5
=28x(2x5)
=28x10
=280
21乘以36
=(20+1)x36
=20x36+1x36
=720+36
=756
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24乘以125
=3x8x125
=3x(8x125)
=3x1000
=3000
28乘以2乘以5
=28x(2x5)
=28x10
=280
21乘以36
=(20+1)x36
=20x36+1x36
=720+36
=756
很高兴为您解答,【the1900】团队为您答题.
请点击下面的【选为满意回答】按钮,