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P. 9
Delta Modern Language Schools
Primary stage Grade 5
Math department
1st term 2024/2025
The statement 25 + x =52 is called equation and the used
letter “x” is called symbol, variable or unknown
❖ Solving equation means finding the value of the variable
in the equation.
You can solve equation in many ways:
1) Mental math 2) invers operation 3) using bar model
Example: 4.76 – b = 2.25
Example: 15 + x = 18 Example: y – 3.45 =1.32
4.76
What number plus 15 y- 3.45 = 1.32 b 2.25
equal 18? then y= 1.32 + 3.45 = 4.77 b = 4.76 – 2.25 = 2.51
The answer is 3
, then x = 3
• Concept 2
A factor is : a number multiplied by another number to get a
product
2 × 9 = 18
Factor Factor Product
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