Showing posts with label Eighteen. Show all posts
Showing posts with label Eighteen. Show all posts

Sunday, January 17, 2016

Mathematical Multiplication Eighteen (18x) Times Table Printable Version Blank And Answer Filled Worksheet Free Download Tool With Black And White Display

Mathematical Multiplication Eighteen (18x) Times Table Printable Version Blank And Answer Filled Worksheet Free Download Tool With Black And White Display

Times Table of Eighteen (18x) 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.

Make sure your browser is JavaScript enabled and JavaScrip is not disabled from settings to use this tool.

Tuesday, September 1, 2015

Internal Concept of Times Table of Eighteen

Now let’s have a look on the table of eighteen.
Here is the table of eighteen as given in textbooks etc.
          18 x 01 = 018
          18 x 02 = 036
          18 x 03 = 054
          18 x 04 = 072
          18 x 05 = 090
          18 x 06 = 108
          18 x 07 = 126
          18 x 08 = 144
          18 x 09 = 162
          18 x 10 = 180
Tip 1: Simply sum up the number twice then subtract the answer from zero padded answer.
18 x 01 = 018 = ((01 x 2) x 10) - (01 x 2) = (02 x 10) - 02 = 020 - 02
18 x 02 = 036 = ((02 x 2) x 10) - (02 x 2) = (04 x 10) - 04 = 040 - 04
18 x 03 = 054 = ((03 x 2) x 10) - (03 x 2) = (06 x 10) - 06 = 060 - 06
18 x 04 = 072 = ((04 x 2) x 10) - (04 x 2) = (08 x 10) - 08 = 080 - 08
18 x 05 = 090 = ((05 x 2) x 10) - (05 x 2) = (10 x 10) - 10 = 100 - 10
18 x 06 = 108 = ((06 x 2) x 10) - (06 x 2) = (12 x 10) - 12 = 120 - 12
18 x 07 = 126 = ((07 x 2) x 10) - (07 x 2) = (14 x 10) - 14 = 140 - 14
18 x 08 = 144 = ((08 x 2) x 10) - (08 x 2) = (16 x 10) - 16 = 160 - 16
18 x 09 = 162 = ((09 x 2) x 10) - (09 x 2) = (18 x 10) - 18 = 180 - 18
18 x 10 = 180 = ((10 x 2) x 10) - (10 x 2) = (20 x 10) - 20 = 200 - 20
Tip 2: Justify the answers with help of sums of digits.
          18 x 01 = 018 = 0 + 1 + 8 = 9
          18 x 02 = 036 = 0 + 3 + 6 = 9
          18 x 03 = 054 = 0 + 5 + 4 = 9
          18 x 04 = 072 = 0 + 7 + 2 = 9
          18 x 05 = 090 = 0 + 9 + 0 = 9
          18 x 06 = 108 = 1 + 0 + 8 = 9
          18 x 07 = 126 = 1 + 2 + 6 = 9
          18 x 08 = 144 = 1 + 4 + 4 = 9
          18 x 09 = 162 = 1 + 6 + 2 = 9
          18 x 10 = 180 = 1 + 8 + 0 = 9