Those Amazing 9

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Those Amazing 9sLearning the multiplication
facts for 9s.

• By Barb Tellef

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Would you like to learn your 9 multiplication
facts really quickly?

• Ok, lets begin.

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The Trick Only 2 Steps!!!

• Step 1
• To find the first number in the product
• subtract 1 from that number thats not 9.
• Step 2
• To find the second number in the product
• subtract the number you got in step 1 from 9.

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• Lets see how this works

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Lets try 9 x 2 together

• Step 1 To find the first number in the product,
  subtract 1 from the number thats not 9. Write
  that in the tens place.
• 9
• X 2 -1
• -----------------
• 1

• Step 2 To find the second number in the product,
  subtract the number you got from 9. Write that in
  the ones place.
• 9
• X 2
• -----------------
• 9- 1
• .

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Now clap and snap

• 9 x 2 18

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Are you ready to try 9 x 3?Try step 1. What will
be the first number?

• Step 1 To find the first number in the product,
  subtract 1 from the number thats not 9
• 9
• X 3 -1
• -----------------
• 2

• Did you get 2?
• Good Job. Now click again and try step 2.

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Now try step 2 for 9 x 3

• Step 2 To find the second number in the product,
  subtract the number you just got from 9
• 9
• X 3
• -----------------
• 9- 2 __

• Did you get 7? Youre on a roll!
• 9
• X 3
• -----------------
• 2 7

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Clap and Snap

• 9 x 3 27

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Now try 9 x 4Try step 1. What will be the first
number?

• Did you get 3?
• Great. Now click again and try step 2.

• Step 1 To find the first number in the product,
  subtract 1 from the number thats not 9
• 9
• X 4 -1
• -----------------
• 3

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Try step 2 for 9 x 4

• Did you get 6? Yeah!!!
• 9
• X 4
• -----------------
• 3 6

• Step 2 To find the second number in the product,
  subtract the number you just got from 9
• 9
• X 4
• -----------------
• 9- 3 __

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Clap and Snap

• 9 x 4 36

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Try 9 x 5 on your own

• Did you get 4?
• Great. Now click again and try step 2.

• Step 1 To find the first number in the product,
  subtract 1 from the number thats not 9
• 9
• X 5 -1
• -----------------
• 4

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Try step 2 for 9 x 5

• Did you get 5? Awesome!!!
• 9
• X 5
• -----------------
• 4 5

• Step 2 To find the second number in the product,
  subtract the number you just got from 9
• 9
• X 5
• -----------------
• 9- 4 __

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Clap and Snap

• 9 x 5 45

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Isnt this easy? Now try9 x 6

• Step 1 Find the first number.
• 9
• X 6 -1
• -----------------
• 5

• Step 2 Find the second number.
• 9
• X 6
• -----------------
• 9- 5
• Give yourself a high 5

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Clap and Snap

• 9 x 6 54

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Lets try 9 x 7 without prompts.

• Step 1 Find the first number.
• 9
• X 7
• -----------------
• 6

• Step 2 Find the second number.
• 9
• X 7
• -----------------
• 6
• Do a golf clap

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Clap and Snap

• 9 x 7 63

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Im so proud of you, I bet you can do 9 x 8 too!!!

• Step 1 Find the first number.
• 9
• X 8
• -----------------
• 7

• Step 2 Find the second number.
• 9
• X 8
• -----------------
• 7
• Give yourself a hug
• .

2
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Clap and Snap

• 9 x 8 72

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• Oh No!!!
• We have an exception.
• Remember how I said that for the first number we
  subtract 1 from the number that is not 9? Well,
  what do you think you should do for 9 x 9?
• Thats right, just subtract 1 from either 9.

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Try it on your own and let me know what number
you come up with.

• Step 1 Find the first number.
• 9
• X 9
• -----------------
• 8

• Step 2 Find the second number.
• 9
• X 8
• -----------------
• 8
• Kiss your brain
• .

1
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Clap and Snap

• 9 x 9 81

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• Congratulations!!!
• You can know multiply by 9.
• Lets try it out.

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Try mental math to solve the problems. Then click
to see if you got the right answer.

• 9
• x 2
• -----
• 18

9 x 3 ----- 27
9 x 4 ----- 36
9 x 5 ----- 45
9 x 6 ----- 54
9 x 7 ----- 63
9 x 8 ----- 72
9 x 9 ----- 81
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• Awesome Job!!!
• Ask Mrs. Tellef for a
• Mad Math Minute on x 9.
• I bet you will be able to get signed off on these
  today.