Question 9 of 14intermediate🔍 AnalyzeShort Answer2 marks

Write the number(s) between 1 and 99 that have the longest name.

Correct Answer

Seventy-eight (78) has 12 letters and is one of the longest number names between 1 and 99. Other numbers with long names include:

  • Seventy-three (12 letters)
  • Seventy-seven (12 letters)
  • Seventy-four (11 letters)
  • Seventy-five (11 letters)
  • Seventy-six (10 letters)
  • Seventy-nine (11 letters)

Step 1: Identify the longest tens-place words: Seventy (7 letters), Sixty (5 letters), Fifty (5 letters), Forty (5 letters)

Step 2: Identify the longest ones-place words: eight (5 letters), seven (5 letters), three (5 letters)

Step 3: Combine to find longest names: Seventy-three (7 + 5 = 12 letters), Seventy-seven (7 + 5 = 12 letters), and Seventy-eight (7 + 5 = 12 letters)

∴ Seventy-three, Seventy-seven, and Seventy-eight have the longest names with 12 letters each.

Exercise: Exercise (Page 6) | Q: 1 | (Page Page 6)
For More Understanding

Explanation

The chapter asks students to find numbers with the longest names. 'Seventy-eight' has 12 letters (S-E-V-E-N-T-Y-E-I-G-H-T). Numbers starting with 'Seventy' (7 letters) combined with longer ones-place words like 'eight' (5 letters), 'seven' (5 letters), 'three' (5 letters), 'four' (4 letters), 'five' (4 letters), 'six' (3 letters), 'nine' (4 letters) create some of the longest number names. The numbers with the longest names are Seventy-three, Seventy-seven, and Seventy-eight, each with 12 letters.

Solution Steps

  1. Step 1: Identify the longest tens-place words: Seventy (7 letters), Sixty (5 letters), Fifty (5 letters), Forty (5 letters)

  2. Step 2: Identify the longest ones-place words: eight (5 letters), seven (5 letters), three (5 letters)

  3. Step 3: Combine to find longest names: Seventy-three (7+5=12 letters), Seventy-seven (7+5=12 letters), and Seventy-eight (7+5=12 letters)

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