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Place Value and Multiplication

Place Value and Multiplication. Place Value & X by 10. 3 2 0. 7 8, 9 5 0. Place Value & X by 10. 2 3 4, 5 6 0. 8 9 0, 1 2 3, 4 5 0. Place Value & X by 10. 8 . 2. 1 0 . 3. When you multiply by ten. The answer gets bigger

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Place Value and Multiplication

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  1. Place Value and Multiplication

  2. Place Value & X by 10 3 2 0 7 8, 9 5 0

  3. Place Value & X by 10 2 3 4, 5 6 0 8 9 0, 1 2 3, 4 5 0

  4. Place Value & X by 10 8 . 2 1 0 . 3

  5. When you multiply by ten • The answer gets bigger • The decimal point moves to the right one place or the numbers move one place to the left 4 6 . 5 . 9

  6. Multiply by 10 - The answer gets bigger 3.52 x 10 = 35.2 4.209 x 10 = 42.09 0.6 0.06 x 10 = 0.0086 x 10 = 0.086

  7. Place Value & X by 100 3, 2 0 0 7 8 9, 5 0 0

  8. Place Value & X by 100 3 4 5, 6 0 0 9 0 1, 2 3 4, 5 0 0

  9. When you multiply by a hundred • The answer gets bigger • The decimal point moves to the right two places or the numbers move two places to the left 4 6 . 5 9 . 3 2 2 8 8 0

  10. Multiply by 100 = 600 • 6 x 100 • 12 x 100 • 25 x 100 • 64 x 100 13.5 x 100 = 1350 = 1200 4.23 x 100 = 423 = 2500 0.16 x 100 = 16 = 6400 0.063 x 100 = 6.3

  11. When you multiply by a thousand • The answer gets bigger • The decimal point moves to the right three places or the numbers move three places to the left . 4 6 5 9 . 3 2 3 2 3 2 5 3 0 5 5

  12. Multiply by 1000 = 6,000 • 6 x 1000 • 12 x 1000 • 25 x 1000 • 64 x 1000 13.5 x 1000 = 13,500 = 12,000 4.23 x 1000 = 4,230 = 25,000 0.16 x 1000 = 160 = 64,000 0.063 x 1000 = 63

  13. When multiplying by 10,100,1000- • I know that the number gets bigger • The place value of each digit is changing or the decimal point is moving 101 =10 102 =10 x 10 =100 103 =10 x 10 x 10 =1000 104 = 10 x 10 x 10 x 10=10000 Can I do this multiply by just looking at it?

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