Port Said International Schools – National Section
Handout: 4(Alg.)
Date
Better education for future generations
Date:
Order of operations
1) Perform the operations within parentheses or grouping symbols
2) Evaluate powers.
3) perform multiplications and divisions in order from left to right.
4) perform additions and subtractions in order from left to right.
Evaluate:
𝐚) 𝟗 + 𝟒 × 𝟑𝟐
𝐛) 𝟏𝟒𝟒 − 𝟖 ÷ 𝟐𝟑
𝐜) 𝟑𝟎 ÷ (𝟕 − 𝟓)𝟐
Square root of a rational number
To square a number , we multiply iy by itself : 5 x 5 = 25 = 𝟓𝟐
The symbol √
is used to denote the positive square root of a rational number.
Note:
Math Department
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Solution:
a)
d)
b)
e)
c)
F)
Exercises: (pg. 110, 116)
Complete:
a) 𝟑 × 𝟒 − 𝟐𝟏 ÷ 𝟕 = ⋯ … … ..
b) √𝟗 + 𝟏𝟔 =………
c) √𝟏𝟎𝟎 − 𝟔𝟒 = …….
d) 𝟐 × 𝟔 − 𝟒 ÷ 𝟐 = ………
e) √(−𝟖)𝟐 + (−𝟔)𝟐 = ⋯ … … .
Math Department
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