How could i explain 5x198 using mental math and distributive property? Using words??

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asked Oct 22, 2018 130k views

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PJ Davis · Answer 1 · 2018-10-25T17:22:02+0000

5 x 198=(5 x 200)-(5 x 2)=1000-10=990
Since 198=200-2, you can express the equation this way, and solve it easily in your head, instead of multiplying it out.
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How could i explain 5x198 using mental math and distributive property? Using words??

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