| 对错我来判。(对的画“√”,错的画“×”) (1)427×65-27×65=(427-27)×65 |
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| (2)102×45=100×45+2×45 |
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| (3)99×35=(100-1)×35=3500-35 |
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| (4)99×125+125=(99+1)×125 |
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| (5)68×8×5=68×(8+5) |
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| (1)√;(2)√;(3)√;(4)√;(5)× |
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(2)95-63+28[ ]
(1)49+56-38
=105-38
=67
(2)95-63+28
=95-91
= 4
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