![](data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" viewBox="0 0 72 71" width="72"></svg>)
66、58、49、59、51、42、52（）（）（）（）
44,35,45,37
What's the easy way to multiply 299 by 19 and subtract 19?
=(299-1)×19
=298×(20-1)
=298×20-298×1
=5960-298
=5662
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