| 对错我来判。(对的画“√”,错的画“×”) (1)28×101=28×100 +28 |
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| (2)45×14= 45×2×7 |
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| (3)78+99×78=99×79 |
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| (4)32×40=30×40+2×40 |
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| (5)360÷9÷4=360×(9×4) |
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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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