Learn about Using Numbers related to addition, multiplication, subtraction, division, how to write numbers, bigger than smaller than numbers and many more.
When you want to increase something you should add or multiply make it bigger.
Example:
5 + 6 = 11 (adding)
5 x 6 = 30 (multiplying)
When you want to decrease something you should subtract or divide make it smaller.
Example:
10 - 6 = 4 (subtracting)
100 / 5 = 20 (dividing)
When you adding, subtracting, multiplying or dividing odd or even numbers the results always like this:
Example 1: Adding
Even +
Even =
Even -
4 +
6 =
10
Even +
Odd =
Odd -
6 +
3 =
9
Odd +
Odd =
Even -
5 +
5 =
10
Example 2: Subtracting
Even -
Even =
Even -
10 -
6 =
4
Even -
Odd =
Odd -
20 -
13 =
7
Odd -
Odd =
Even -
25 -
7 =
18
Example 3: Multiplying
Even x
Even =
Even -
10 x
10 =
100
Even x
Odd =
Even -
20 x
5 =
100
Odd x
Odd =
Odd -
7 x
9 =
63
Example 4: Dividing
Even ÷
Even =
Even -
100 ÷
10 =
10
Even ÷
Odd =
Evan -
20 ÷
5 =
4
Odd ÷
Odd =
Odd -
21 ÷
7 =
3
But Sometimes It Does Not Work Perfectly! Sometimes we cannot divide things up evenly ... there may be something left over.
Example
9 ÷ 2 = 4 and 1 left
9 cannot be divided exactly into 2, because there will be 1 left over. We call that the Remainder.
