Ask Question
24 March, 16:12

Find each Expression mentally show the steps you used 5x39

+3
Answers (2)
  1. 24 March, 17:30
    0
    Well i'm not sure what the perfect explanation to this answer is but you just multiply 39x5 so 5x9+5x3
  2. 24 March, 18:43
    0
    I'm not sure if this is how your teacher wants you to do mental multiplication, but these are a couple of ways I would do it.

    1. This is probably the "better" way - - notice that 5 * 39 is just like (5 * 40) - 5. From here:

    (5 * 40) - 5

    200 - 5

    195

    2. Another method you could use would be to divide 39 by 2 then multiply by 10. It works mainly because dividing by 2 is multiplying by 0.5. Then, multiplying by 10 moves the decimal over to the right. It's like breaking up the * 5. It would go like this:

    (39 : 2) * 10

    19.5 * 10

    195

    I provided two methods of solving, but either way, the solution is 195.
Know the Answer?
Not Sure About the Answer?
Find an answer to your question ✅ “Find each Expression mentally show the steps you used 5x39 ...” in 📘 Mathematics if you're in doubt about the correctness of the answers or there's no answer, then try to use the smart search and find answers to the similar questions.
Search for Other Answers