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Multiplication ,Rounding, and Exponents !

Multiplication ,Rounding, and Exponents !. By: Brooke Baker. Keep in mind you will have a test on this!. What do you already know about this?. Write in your answer. What you will learn. How to do multiplication like this 8,000 x 500 How to round How to do exponents.

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Multiplication ,Rounding, and Exponents !

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  1. Multiplication ,Rounding, andExponents! By: Brooke Baker Keep in mind you will have a test on this! What do you already know about this? . Write in your answer. What you will learn • How to do multiplication like this 8,000 x 500 • How to round • How to do exponents Click the screen if you want to continue.

  2. First Lesson Pretend you have this question on a math paper; 8,000 x 500 So many zeros! Why not make this easier? 8 x 5 = 40 Now add up the zeros. Also remember the 0 in 40 does not count as one Of the 5 zeros. 4,000,000 What have we learned here? . Extra Credit Answer! How do you say the answer?

  3. Extra Credit! Time For Some Real Work! 9,000 x 3,000 6,000 x 4,000 . . 2,000,000 x 30 5,000 x 3,000 . . 400 x 900 8,000 x 9,000 . . 5,000 x 7,000 1,000 x 1,000 . . 5,000 x 5,000 3,000 x 4,000 . . 8,000 x 5 7,000 x 4,000 . . 25,000,000 x 13 Who knows? Zero’s Trick! 325,000,000

  4. Next Lesson! In this lesson we will learn how to round! The Key: When rounding the number must be greater than or equal to 5 to round up. Pretend that you are in a store and you are in a store and you see this price: $17.99 You also want to by something this price: $19.69 A NEED to know thing! These would take paper to do so why not round? You would Round that The price would Be $40 $17.99 sure is close to $20. $19.69 sure is close to $20. 20 20 40 + 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

  5. Guess What Time! Work Time! What Have We Learned? . . . . . . . Look at each problem and write what you would round to above the problem. Then solveboth. 54 x 67= . 78 x 45= . 343 x 101= . 9 x 57= . 689 x 567= . Extra Credit! What Would 99,999 Rounded to the nearest Thousands be? 100,000 *Hint!* *Hint!* sharpen a pencil because you really need to do 2 problems!

  6. Third Lesson! What in the world are exponents ? Lets just say this: = 3 4 = the 3 meant 3 4’s. 4 x 4 x 4 = 64 Not 4 x 3

  7. Do you think you know how to do it? Extra Credit! What is: Remember you can do your work on the line. 2 100,000,000,000,000,000,000,000,000,0000= ? 4 = . 2 = . 6 = . 9 = . 7= . 3 = . 3 = . 3 = . 3 1 2 3 3 6 5 7

  8. Test Time! Do your best! Next page to! Round to the nearest ten. Do the multiplication. 12,499 12,000 12,500 13,000 13 10 20 14 188,870 188,900 200,00 188,800 60,000 70,000 50,000 60,000 10 0 10 100 A B C 4,000 x 7,000 28,000,000 28,000 23,000 x 2 46,000 23,002 4,000 x 8 32,000 320 30 x 3,000 3,030 90,000 89,000 x 2 178,000 89,002 or B C A or A B C or A B C or A B C or Next slide too!

  9. Write down the answer. 4 4 = . 2 = . 8 = . 6 = . 9 = . 5 0 2 1

  10. You are all done! Bye!

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