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Multiplication, part 2
 

Multiplication, part 2

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    Multiplication, part 2 Multiplication, part 2 Presentation Transcript

    • …how to make certain numberso n t h e M u l t i p l i c a t i o n Ta b l e e a s yto remember!
    • Zero times (multiplied by) ANYTHING is Zero! 0x0=0 0x8=0 0x1=0 0x9=0 0x2=0 0x10=0 0x3=0 0x11=0 0x4=0 0x12=0 0x5=0 0x6=0 0x7=0
    • One times ANYTHING besides 0 is itself. 1x1=1 1x2=2 1x8=8 1x3=3 1x9=9 1x4=4 1x10=10 1x5=5 1x11=11 1x6=6 1x12=12 1x7=7
    • A number times 2 is double (twice) that number. 2x1=2 2x8=16 2x2=4 2x9=18 2x3=6 2x10=20 2x4=8 2x11=22 2x5=10 2x12=24 2x6=12 2x7=14
    • There are two steps whenmultiplying by nines Step 1: 9x1=0 9x8=7Subtract one 9x2=1 9x9=8from the 9x3=2 9x10=9number you 9x4=3are 9x5=4multiplying. 9x6=5 9x7=6
    • There are two steps whenmultiplying by nines Step 2: 9x1=0 9 9x8=7 2Next to that, 9x2=1 8 9x9=8 1write the 9x3=2 7 9x10=9 0number you 9x4=3 6would need 9x5=4 5to add up to 9x6=5 4nine. 9x7=6 3
    • To multiply by ten, add a zero to that number. 10x1=10 10x8=80 10x2=20 10x9=90 10x3=30 10x10=100 10x4=40 10x11=110 10x5=50 10x12=120 10x6=60 10x7=70