Showing posts with label Fifteen. Show all posts
Showing posts with label Fifteen. Show all posts

Thursday, January 14, 2016

Mathematical Multiplication Fifteen (15x) Times Table Printable Version Blank And Answer Filled Worksheet Free Download Tool With Black And White Display

Mathematical Multiplication Fifteen (15x) Times Table Printable Version Blank And Answer Filled Worksheet Free Download Tool With Black And White Display

Times Table of Fifteen (15x) Printable Version Worksheet Free Download Tool

This tool is created only for educational purpose and functioning of tool varies depends on several aspects like type of platform, browser settings, screen resolution and other similar aspects.

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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