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Number Analogy - Intermediate Level: arithmetic operations INTERMEDIATE

Comprehensive weakness targeting worksheet covering 20 intermediate-level number analogy problems. Worksheet 18 of 30 emphasizes arithmetic operations. Master arithmetic operations, digit manipulation, number squares through detailed explanations. Difficulty: moderate complexity with mixed patterns. Tailored for mid-level preparation.

📝 Worksheet 18 of 30 • 20 questions • ⏱️ Estimated time: 20 minutes • 🎯 Intermediate level

What you'll learn in this worksheet:
Your progress through Number Analogy
Worksheet 18 of 30 (60% complete)

Question 1

Find the missing number: 6 : 720 :: 3 : ?
The relationship is factorial. 6! = 720, 3! = 6
factorial, advanced

Question 2

Find the missing number: 38 : 26 :: 23 : ?
The subtractor increases: -12 then -15. So 23 - 15 = 8
subtraction, basic

Question 3

Find the missing number: 8 : 64 :: 6 : ?
The relationship is squaring the number. So 8² = 64, and 6² = 36
square, power

Question 4

Find the missing number: 43 : 7 :: 78 : ?
The relationship is the sum of digits. Sum of digits of 43 = 7, sum of digits of 78 = 15
digit, sum

Question 5

Find the missing number: 29 : 31 :: 7 : ?
The relationship is the next prime number. Next prime after 7 is 11
prime, advanced

Question 6

Find the missing number: 2, 2 : 4 :: 1, 4 : ?
Fibonacci pattern: each term is sum of previous two. 1 + 4 = 5
pattern, sequence

Question 7

Find the missing number: 29 : 2 :: 31 : ?
The relationship is the gap to the next prime. Gap after 31 is 6
prime, advanced

Question 8

Find the missing number: 2 : 8 :: 4 : ?
The relationship is cubing the number. So 2³ = 8, and 4³ = 64
square, power

Question 9

Find the missing number: 35 : 31 :: 34 : ?
The subtractor alternates: -4 then -3. So 34 - 3 = 31
subtraction, basic

Question 10

Find the missing number: 26 : 14 :: 49 : ?
The relationship is the difference between number and product of its digits. |49 - 36| = 13
product, digits

Question 11

Find the missing number: 4 : 12 :: 5 : ?
The multiplier increases by 1: ×3 then ×4. So 5 × 4 = 20
multiplication, basic

Question 12

Find the missing number: 67 : 76 :: 82 : ?
The relationship is reversing the digits. Reverse of 67 is 76, reverse of 82 is 28
reverse, digits

Question 13

Find the missing number: 3 : 8 (n=2) :: 8 : ?
The nth term formula: a + (n-1)d. For 8, term 2 = 13
progression, sequence

Question 14

Find the missing number: 2, 2, 4 : 8 :: 1, 2, 3 : ?
Tribonacci pattern: each term is sum of previous three. 1+2+3 = 6
pattern, sequence

Question 15

Find the missing number: 2 : 5 :: 2 : ?
Pattern: multiply by 2 and add 1. 2 × 2 + 1 = 5
pattern, sequence

Question 16

Find the missing number: 6 : 49 :: 9 : ?
The relationship is the next consecutive square. (9+1)² = 100
square, roots

Question 17

Find the missing number: 2 : sum of 2 terms = 8 :: 1 : sum of 2 terms = ?
Sum of 2 terms of AP: n/2 × (2a + (n-1)d). For 1, sum = 6
progression, sequence

Question 18

Find the missing number: 84 : 3 :: 47 : ?
The relationship is the digital root (repeated sum until single digit). Digital root of 84 = 3, of 47 = 2
digit, sum

Question 19

Find the missing number: 7 : 5 :: 5 : ?
The relationship is the previous prime number. Previous prime before 5 is 3
prime, advanced

Question 20

Find the missing number: 2 : 6 :: 3 : ?
The relationship is square then add 2. 3² + 2 = 11
square, roots
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