Math Problem Statement

Diagram 2 shows five students who were given number cards with different bases in a Mathematics quiz competition. Who got the largest value and the smallest value?

Solution

The question in the image asks which student got the largest and smallest number when given cards with numbers in different bases. The bases for each student are as follows:

  • Rozita: 241 in base 5.
  • Aishah: 111100₂ (binary or base 2).
  • Helmy: 110₂ (binary or base 2).
  • Osman: 68₁₀ (decimal or base 10).
  • Maznah: 114₈ (octal or base 8).

To solve this, we need to convert all these numbers to base 10 (decimal):

  1. Rozita: 241₅ = 2×52+4×51+1×50=2×25+4×5+1×1=50+20+1=71102 \times 5^2 + 4 \times 5^1 + 1 \times 5^0 = 2 \times 25 + 4 \times 5 + 1 \times 1 = 50 + 20 + 1 = 71₁₀
  2. Aishah: 111100₂ = 1×25+1×24+1×23+1×22+0×21+0×20=32+16+8+4=60101 \times 2^5 + 1 \times 2^4 + 1 \times 2^3 + 1 \times 2^2 + 0 \times 2^1 + 0 \times 2^0 = 32 + 16 + 8 + 4 = 60₁₀
  3. Helmy: 110₂ = 1×22+1×21+0×20=4+2=6101 \times 2^2 + 1 \times 2^1 + 0 \times 2^0 = 4 + 2 = 6₁₀
  4. Osman: 68₁₀ is already in base 10.
  5. Maznah: 114₈ = 1×82+1×81+4×80=1×64+1×8+4=64+8+4=76101 \times 8^2 + 1 \times 8^1 + 4 \times 8^0 = 1 \times 64 + 1 \times 8 + 4 = 64 + 8 + 4 = 76₁₀

Comparing the values:

  • Rozita: 71
  • Aishah: 60
  • Helmy: 6
  • Osman: 68
  • Maznah: 76

The largest value is Maznah (76) and the smallest value is Helmy (6).

Thus, the answer is:

  • Largest value: Maznah.
  • Smallest value: Helmy.

Would you like more details on the base conversions or have any other questions?


Here are 5 related questions for further practice:

  1. Convert 132₄ to base 10.
  2. What is the base 10 equivalent of 10011₂?
  3. How do you convert decimal numbers to base 8 (octal)?
  4. Which is larger: 101010₂ or 52₁₀?
  5. How do you determine the base from a given number?

Tip: Always ensure you break down powers systematically when converting between number bases to avoid mistakes.

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Math Problem Analysis

Mathematical Concepts

Base Conversion
Number Systems

Formulas

Base conversion formula: Convert a number in base n to base 10 by summing each digit multiplied by the base raised to the appropriate power.

Theorems

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Suitable Grade Level

Grades 6-8