ICSE Class 8 Mathematics — Flashcards

A: Step 1: A rational number has the form p/q where p and q are integers and q ≠ 0. Step 2: Here p = -3 and q = 7. Step 3: Both are integers and the denominator is not zero. Answer: -3/7 is a rational nu

A: Step 1: Zero can be written with a non-zero denominator. Step 2: Examples: 0/1 and 0/5. Step 3: Both have denominator not equal to 0. Answer: 0 = 0/1 = 0/5, so 0 is a rational number.

A: Step 1: In p/q, p is the numerator and q is the denominator. Step 2: For -8/15, p = -8 and q = 15. Answer: Numerator = -8, denominator = 15.

A: Step 1: Count how many times 2 is multiplied by itself. Step 2: It is multiplied 5 times. Step 3: So the exponential form is 2^5. Answer: 2 × 2 × 2 × 2 × 2 = 2^5 = 32.

A: x^n means x raised to the power n. It means x is multiplied by itself n times. Example: 3^4 = 3 × 3 × 3 × 3 = 81. Here, 3 is the base and 4 is the exponent.

A: Step 1: The bases are the same, so add the exponents. Step 2: 3^3 × 3^5 = 3^(3+5) Step 3: 3^8 = 6561 Answer: 6561.

A: Step 1: Square means multiply the number by itself. Step 2: 5 × 5 = 25. Answer: 5 squared = 25.

A: Step 1: Multiply -3 by -3. Step 2: (-3) × (-3) = 9. Answer: (-3) squared = 9. Check: the square of any negative or positive number is positive.

A: Step 1: Multiply 0.2 by 0.2. Step 2: 0.2 × 0.2 = 0.04. Answer: 0.2 squared = 0.04.