9.8乘27简便运算怎么做
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9.8乘27简便运算怎么做
9.8乘27简便运算怎么做
9.8乘27简便运算怎么做
9.8x27
=(10-0.2)x27
=10x27-0.2x27
=270-5.4
=264.6
把9.7看成10-0.3来做
9.8x27
=(10-0.2)x27
=10x27-0.2x27
=270-5.4
=264.6
9.8乘27简便运算怎么做
9.8乘27简便运算怎么做
9.8乘27简便运算怎么做
9.8x27
=(10-0.2)x27
=10x27-0.2x27
=270-5.4
=264.6
把9.7看成10-0.3来做
9.8x27
=(10-0.2)x27
=10x27-0.2x27
=270-5.4
=264.6