Monday, August 31, 2015

Internal Concept of Times Table of Seventeen

Now let’s have a look on the table of seventeen.
Here is the table of seventeen as given in textbooks etc.
          17 x 01 = 017
          17 x 02 = 034
          17 x 03 = 051
          17 x 04 = 068
          17 x 05 = 085
          17 x 06 = 102
          17 x 07 = 119
          17 x 08 = 136
          17 x 09 = 153
          17 x 10 = 170
Tip 1: Simply Padding Zero at the End of the number then sum up the same number twice with answer and answer of multiplying number five times to get the table of seventeen.
17 x 01 = 017 = (01 x 10) + (01 x 5) + (01 x 2) = 010 + 05 + 02
17 x 02 = 034 = (02 x 10) + (02 x 5) + (02 x 2) = 020 + 10 + 04
17 x 03 = 051 = (03 x 10) + (03 x 5) + (03 x 2) = 030 + 15 + 06
17 x 04 = 068 = (04 x 10) + (04 x 5) + (04 x 2) = 040 + 20 + 08
17 x 05 = 085 = (05 x 10) + (05 x 5) + (05 x 2) = 050 + 25 + 10
17 x 06 = 102 = (06 x 10) + (06 x 5) + (06 x 2) = 060 + 30 + 12
17 x 07 = 119 = (07 x 10) + (07 x 5) + (07 x 2) = 070 + 35 + 14
17 x 08 = 136 = (08 x 10) + (08 x 5) + (08 x 2) = 080 + 40 + 16
17 x 09 = 153 = (09 x 10) + (09 x 5) + (09 x 2) = 090 + 45 + 18
17 x 10 = 170 = (10 x 10) + (10 x 5) + (10 x 2) = 100 + 50 + 20
Tip 2: Simply Padding Zero at the End of the number and multiply it with two then subtracts the same number three times with answer and get the table of seventeen.
          17 x 01 = 017 = (01 x 10) x 2 - (01 x 3) = (010 x 2) - 03
          17 x 02 = 034 = (02 x 10) x 2 - (02 x 3) = (020 x 2) - 06
          17 x 03 = 051 = (03 x 10) x 2 - (03 x 3) = (030 x 2) - 09
          17 x 04 = 068 = (04 x 10) x 2 - (04 x 3) = (040 x 2) - 12
          17 x 05 = 085 = (05 x 10) x 2 - (05 x 3) = (050 x 2) - 15
          17 x 06 = 102 = (06 x 10) x 2 - (06 x 3) = (060 x 2) - 18
          17 x 07 = 119 = (07 x 10) x 2 - (07 x 3) = (070 x 2) - 21
          17 x 08 = 136 = (08 x 10) x 2 - (08 x 3) = (080 x 2) - 24
          17 x 09 = 153 = (09 x 10) x 2 - (09 x 3) = (090 x 2) - 27
          17 x 10 = 170 = (10 x 10) x 2 - (10 x 3) = (100 x 2) - 30
Tip 3: Justify the answers with help of sums of digits.
          17 x 01 = 017 = 0 + 1 + 7 = 8
          17 x 02 = 034 = 0 + 3 + 4 = 7
          17 x 03 = 051 = 0 + 5 + 1 = 6
          17 x 04 = 068 = 0 + 6 + 8 = 14 = 1 + 4 = 5
          17 x 05 = 085 = 0 + 8 + 5 = 13 = 1 + 3 = 4
          17 x 06 = 102 = 1 + 0 + 2 = 3
          17 x 07 = 119 = 1 + 1 + 9 = 11 = 1 + 1 = 2
          17 x 08 = 136 = 1 + 3 + 6 = 10 = 1 + 1 = 1
          17 x 09 = 153 = 1 + 5 + 3 = 9
          17 x 10 = 170 = 1 + 7 + 0 = 8

Sunday, August 30, 2015

Internal Concept of Times Table of Sixteen



Now let’s have a look on the table of sixteen.
Here is the table of sixteen as given in textbooks etc.
          16 x 01 = 016
          16 x 02 = 032
          16 x 03 = 048
          16 x 04 = 064
          16 x 05 = 080
          16 x 06 = 096
          16 x 07 = 112
          16 x 08 = 128
          16 x 09 = 144
          16 x 10 = 160
Simply Padding Zero at the End of the number then sum up the same number with answer and answer of multiplying number five times to get the table of sixteen.
          16 x 01 = 016 = (01 x 10) + (01 x 5) + 01 = 010 + 05 + 01
          16 x 02 = 032 = (02 x 10) + (02 x 5) + 02 = 020 + 10 + 02
          16 x 03 = 048 = (03 x 10) + (03 x 5) + 03 = 030 + 15 + 03
          16 x 04 = 064 = (04 x 10) + (04 x 5) + 04 = 040 + 20 + 04
          16 x 05 = 080 = (05 x 10) + (05 x 5) + 05 = 050 + 25 + 05
          16 x 06 = 096 = (06 x 10) + (06 x 5) + 06 = 060 + 30 + 06
          16 x 07 = 112 = (07 x 10) + (07 x 5) + 07 = 070 + 35 + 07
          16 x 08 = 128 = (08 x 10) + (08 x 5) + 08 = 080 + 40 + 08
          16 x 09 = 144 = (09 x 10) + (09 x 5) + 09 = 090 + 45 + 09
          16 x 10 = 160 = (10 x 10) + (10 x 5) + 10 = 100 + 50 + 10

Saturday, August 29, 2015

Internal Concept of Times Table of Fifteen with alternative tip of fives and zeros



Now let’s have a look on the table of fifteen.
Here is the table of fifteen as given in textbooks etc.
          15 x 01 = 015
          15 x 02 = 030
          15 x 03 = 045
          15 x 04 = 060
          15 x 05 = 075
          15 x 06 = 090
          15 x 07 = 105
          15 x 08 = 120
          15 x 09 = 135
          15 x 10 = 150
Simply Padding Zero at the End of the number then sum up the same number five times with answer to get the table of fifteen.
          15 x 01 = 015 = (01 x 10) + (01 x 5) = 010 + 05
          15 x 02 = 030 = (02 x 10) + (02 x 5) = 020 + 10
          15 x 03 = 045 = (03 x 10) + (03 x 5) = 030 + 15
          15 x 04 = 060 = (04 x 10) + (04 x 5) = 040 + 20
          15 x 05 = 075 = (05 x 10) + (05 x 5) = 050 + 25
          15 x 06 = 090 = (06 x 10) + (06 x 5) = 060 + 30
          15 x 07 = 105 = (07 x 10) + (07 x 5) = 070 + 35
          15 x 08 = 120 = (08 x 10) + (08 x 5) = 080 + 40
          15 x 09 = 135 = (09 x 10) + (09 x 5) = 090 + 45
          15 x 10 = 150 = (10 x 10) + (10 x 5) = 100 + 50

Tip 2: Direct Calculation with help of series of 5s and 0s

Note the last digits; they are just series of 5s and 0s
          15 x 01 = 01 5
          15 x 02 = 03 0
          15 x 03 = 04 5
          15 x 04 = 06 0
          15 x 05 = 07 5
          15 x 06 = 09 0
          15 x 07 = 10 5
          15 x 08 = 12 0
          15 x 09 = 13 5
          15 x 10 = 15 0
Right most digits are just series of 1 to 15 except 2, 5, 8, 11, 14...
          15 x 01 = 01 5
          15 x 02 = 03 0
          15 x 03 = 04 5
          15 x 04 = 06 0
          15 x 05 = 07 5
          15 x 06 = 09 0
          15 x 07 = 10 5
          15 x 08 = 12 0
          15 x 09 = 13 5
          15 x 10 = 15 0

Friday, August 28, 2015

Internal Concept of Times Table of Fourteen



Now let’s have a look on the table of fourteen.
Here is the table of fourteen as given in textbooks etc.
          14 x 01 = 014
          14 x 02 = 028
          14 x 03 = 042
          14 x 04 = 056
          14 x 05 = 070
          14 x 06 = 084
          14 x 07 = 098
          14 x 08 = 112
          14 x 09 = 126
          14 x 10 = 140
Simply Padding Zero at the End of the number then sum up the same number four times with answer to get the table of fourteen.
          14 x 01 = 014 = (01 x 10) + (01 x 4) = 010 + 04
          14 x 02 = 028 = (02 x 10) + (02 x 4) = 020 + 08
          14 x 03 = 042 = (03 x 10) + (03 x 4) = 030 + 12
          14 x 04 = 056 = (04 x 10) + (04 x 4) = 040 + 16
          14 x 05 = 070 = (05 x 10) + (05 x 4) = 050 + 20
          14 x 06 = 084 = (06 x 10) + (06 x 4) = 060 + 24
          14 x 07 = 098 = (07 x 10) + (07 x 4) = 070 + 28
          14 x 08 = 112 = (08 x 10) + (08 x 4) = 080 + 32
          14 x 09 = 126 = (09 x 10) + (09 x 4) = 090 + 36
          14 x 10 = 140 = (10 x 10) + (10 x 4) = 100 + 40