Sunday, March 4, 2012

Tables made easy

You can multiply most of the problems in your head when you know your multiplication table up to 5 times table. If you know your 2, 3, 4 and 5 times tables up to 10 times each number, then you also know part of your 6, 7, 8, and 9 times table. As you learn your higher tables, mental calculations become much easier. It is easy to learn your 11 times table and the twelve times table is not difficult. Six times 12 is six times 10 plus six times two. It is easy to add answers for 6 times 12 to get 72.
6 X 10 = 60; 6 X 2 = 12; 60 + 12 = 72

We see, how easy it is to learn your tables and how it can be done much more quickly than in olden days.
It is usual to learn tables up to the 12 times table. It is not hard to learn the 13 times table if you know the 12 times table. If you know that 12 times 3 is 36, just add another 3 to get 39. Twelve threes plus one more three makes 13 threes. If you know 12 fours are 48. Just add another four to get 13 times 4 equals 52.

Now that you know your 13 times table, learn the 14 times table. Factor 14 to 7 times 2. Then you multiply the number by 7 and double the answer.
7 X 1 = 7; double = 14; 14 X 1 = 14
7 X 2 = 14; double = 28; 14 X 2 = 28
7 X 3 = 21; double = 42; 14 X 3 = 42
7 X 4 = 28; double = 56; 14 X 4 = 56
7 X 5 = 35; double = 70; 14 X 5 = 70
7 X 6 = 42; double = 84; 14 X 6 = 84
7 X 7 = 49; double = 98; 14 X 7 = 98
7 X 8 = 56; double = 112; 14 X 8 = 112
7 X 9 = 63; double = 126; 14 X 9 = 126
7 X 10 = 70; double = 140; 14 X 10 = 140

Practice these easy steps and you will learn your tables without even trying hard. You will find that you can multiply and divide directly by 13, 14 and 15. This will give you an advantage in your Math Class. comments