3 years ago

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

1 answer:

hjlf3 years ago

5 0

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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