Multiplication

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Multiplication

• A simple way to learn your multiplication facts!!

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What is Multiplication?

• Multiplication is repeated addition.

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Example for 2 x 6 You can solve this problem
2 ways.

• You can add 2, six times.
• 222222 12
• 2 x 6 12 ,
• 6 x 2 12

• You can add 6, two times.
• 66 12
• 2 x 6 12,
• 6 x 2 12

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Multiplying ZEROS

• Zero is a cinch to do,
• the answers right in front of you.
• For every problem its the same,
• zilch or zero is its name!
• 0 x 0 0
• 0 x 5 0
• 0 x 32 0
• 0 x 273 0

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Multiplying ONES

• One is simple as can be,
• its known as the identity.
• The answer to identify?
• Its the one you multiply!
• 1 x 70 70
• 1 x 25 25
• 1 x 15 15
• 1 x 85 85

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Multiplying TWOS

• Two is very fast and fun,
• quickly double and youre done.
• Whats that you say, be more precise?
• Okay then, just add twice!!
• 2 x 8 16
• 8 8 16
• 2 x 7 14
• 7 7 14

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Multiplying THREES

• Three is as easy as can be,
• if you triple what you see.
• In other words just add it thrice,
• this is simply one more than
• twice!
• 3 x 3 9
• 33 6, 639
• 3 x 5 15
• 55 10, 105 15

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Multiplying FOURS

• Four is very fast to do,
• when you multiply by 2.
• Heres a little good advice
• please just always double twice!
• 4 x 4 16
• 4 4 8, 8 8 16
• 4 x 8 32
• 8 8 16, 16 16 32

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Multiplying FIVES

• Five will yield the right amount
• if by 5s you always count.
• Or else just multiply by 10,
• half will get you there again!
• 5 x 5 25
• 5, 10, 15, 20, 25

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Multiplying SIXS

• Six is pretty quick to do,
• just multiply by 3 then 2.
• If this sounds like too much trouble
• triple first before you double!
• 6 x 4 24
• (triple) 4 4 4 12
• (now double) 12 12 24

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Multiplying SEVENS

• Seven doesnt take much time,
• even though it is a prime.
• Here is all you have to do,
• first times 5 then add times 2!
• 7 x 7 49
• 5 x 7 35 then 2 x 7 14
• 35 14 49

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Multiplying EIGHTS

• Eight is very much like four,
• simply double but once more.
• Since 2 times 2 times 2 is 8,
• doubling three times works just great!
• 8 x 6 48
• 6 6 12
• 12 12 24
• 24 24 48

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Multiplying NINES

• Nine is faster to compute,
• if at first you overshoot.
• Heres a very clever tack,
• do 10 times and then subtract!
• 9 x 7 63
• 10 x 7 70
• 70- 7 63

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Multiplying TENS

• Ten is such a breeze to do,
• all because of place value.
• To quickly multiply by 10,
• put a zero at the end!
• 10 x 9 90

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The Best of TimesMath Strategies that Multiply

• By Greg Tang