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Class 8 Maths Practice Test: Algebraic Expressions and Identities - Identity
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Avg score: 72% • Most missed: “Using the standard identity, find the value of (3.9)2.”

An identity is an equality that holds true regardless of the values chosen for its variables. They are used in simplifying or rearranging algebra expressions.

The two sides of an identity are interchangeable, so we can replace one with the other at any time.

Class 8 Maths Practice Test: Algebraic Expressions and Identities - Identity
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13 Questions

1. Using the standard identity, find the value of (3.9)2.
2. Select the term which is not an identity.
3. Evaluate the value (x + 12)(x + 1).
4. Find the value of (12.4)2.
5. Find the value of (10001 + 12)(10001 – 12).
6. Find the value of (10001 + 12)(10001 – 12).
7. Calculate the value of 904 × 902.
8. Calculate the value of 904 × 902.
9. Evaluate the value of (2q – 3p)2.
10. Using the standard identity, find the value of (2m + 2)(2m + 3).
11. Find the value of (98)2 – (2)2.
12. Find the value of (98)2 – (2)2.
13. Find the value of (2a + 1)2 using standard identity.

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