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3 December, 10:08

How do i use distributive property and mental math to find 5*198

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Answers (2)
  1. 3 December, 13:58
    0
    Is this the whole problem? I have only seen it used with parentheses.

    Example 4 (8+3)
  2. 3 December, 14:06
    0
    So what you can do is just simplify your problem down to something much more complex. For example you can put 5x190---> 5x (190+8) and you would simplify 5 into 190 and 8 and then you can get 950 from multiplying 5 and 190 and then by multiplying 5 and 8 you get 40 so you add your answer from 190x5 to 40. So it would look something like this ...

    5x (190+8)

    5x190=950

    5x8=40

    950+40=990

    To check your answer ...

    198x5=990
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