98×74怎么简便运算
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98×74怎么简便运算
98×74
=(100-2)×74
=100×74-2×74
=7400-2×(75-1)
=7400-2×75+2
=7400-150+2
=7250+2
=7252
=(100-2)X74
=7400-148
=7252
98x74
=(100-2)x74
=7400-148
=7252
98×74怎么简便运算
98×74
=(100-2)×74
=100×74-2×74
=7400-2×(75-1)
=7400-2×75+2
=7400-150+2
=7250+2
=7252
=(100-2)X74
=7400-148
=7252
98x74
=(100-2)x74
=7400-148
=7252