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Published byAshly Liggett Modified over 2 years ago

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Very large numbers! BOOM! How far? miles

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How many seconds in 70 years? 70 years = seconds! Very large numbers! Happy 70 th Birthday! SPLAT!

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Dinosaurs roamed the earth 228 million years ago Very large numbers!

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Short hand! 100 = 10 x = 10 x 10 x = 10 x 10 x 10 x 10 x = 10 x 10 x 10 x = 10 x 10 x 10 x 10 x 10 x 10 10

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Standard Form 200 = 2 x = 4 x = 5 x = 7 x = 3 x This is also known as Scientific Notation.

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Exercise 1 (1)2 000 (2) (3) 500 (4) (5) = 5 x 100 = 8 x = 2 x = 9 x = 2 x 1000

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Add the decimal point A short cut Between 1 and 10 The point moved 6 places Move the point to get a number between 1 and 10

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A short cut Add the decimal point Between 1 and 10 The point moved 7 places Move the point to get a number between 1 and 10

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A short cut Add the decimal point Between 1 and 10 The point moved 9 places Move the point to get a number between 1 and 10 Happy Birthday: Seconds old! SPLAT!

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A short cut Add the decimal point Between 1 and 10 The point moved 8 places Move the point to get a number between 1 and 10

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Exercise 2 (1) (2) (3) (4) (5) (6) (7) (8) (9) (10)

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Changing back = Zeros after the point aren’t needed. The point moves 7 places Hint: Add 7 zeros, although you probably won’t need them all.

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= Zeros after the point aren’t needed. The point moves 5 places Hint: Add 5 zeros, although you probably won’t need them all. Changing back

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Exercise 3 (1) (2) (3) (4) (5) (6) (7) (8) (9) (10) = = = = = = = = = =

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What’s this called? and this one? What’s this called? Name that number! one thousand one million one billion one googal !!!

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Very small numbers! How wide is an atom? metres wide!

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Standard Form for small numbers The point moved 10 places. Negative sign for small numbers. Move the point to get a number between 1 and 10

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Standard Form for small numbers The point moved 7 places. Negative sign for small numbers. Move the point to get a number between 1 and 10

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Standard Form for small numbers The point moved 6 places. Negative sign for small numbers. Move the point to get a number between 1 and 10

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Exercise 4 (1) (2) (3) (4) (5) (6) (7) (8) (9) (10)

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Changing back small numbers = Hint: Add 3 zeros to the left of the number. -3 so remember to move point left for small numbers..

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Changing back small numbers = Hint: Add 5 zeros to the left of the number. -3 so remember to move point left for small numbers.

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Changing back small numbers = Hint: Add 6 zeros to the left of the number. -3 so remember to move point left for small numbers.

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Exercise 5 (1) (2) (3) (4) (5) (6) (7) (8) (9) (10) = = = = = = = = = =

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