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Online Quiz (Worksheet A B C D)

Questions Per Quiz = 2 4 6 8 10

MEAP Preparation - Grade 7 Mathematics
2.53 Value of an Algebraic Expression - III

Example: If a=8 and b=7, find the value of a2+b2.
Solution:
Substitute the values of 'a' and 'b' in the given equation.
a2+b2 = 82+72 = 8x8 + 7x7 = 64+49 = 113.
Directions: Find the values of the following expressions and enter your answers in the space provided. Also write at least 10 examples of your own.
Q 1: If a=3.5 and b=1.5, find the value of a2-2ab+b2.
Answer:

Q 2: If p=2, q=-1 and r=0, find the value of p2(q-r)+q2(r-p)+r2(p-q).
Answer:

Q 3: If p=3 and q=2, find the value of p2+q2.
Answer:

Q 4: If p=3 and q=2, find the value of 2p2+3q2.
Answer:

Q 5: If x=5 and y=3, find the value of x3+y3.
Answer:

Q 6: If p=3 and q=2, find the value of p2-q2.
Answer:

Q 7: If p=3 and q=2, find the value of (p+q)2.
Answer:

Q 8: If x=5 and y=3, find the value of x2+xy+y2.
Answer:

Question 9: This question is available to subscribers only!

 Question 10: This question is available to subscribers only!


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