Number Analogy - Beginner-Intermediate Level: decimal patterns BEGINNER-INTERMEDIATE

Comprehensive race against clock worksheet covering 20 beginner-intermediate-level number analogy problems. Worksheet 8 of 30 emphasizes decimal patterns. Master numerical relationships, square-cube patterns, prime numbers through detailed explanations. Difficulty: building on fundamentals with moderate challenges. Tailored for developing preparation.

📝 Worksheet 8 of 30 • 20 questions • ⏱️ Estimated time: 20 minutes • 🎯 Beginner-intermediate level

What you'll learn in this worksheet:
Your progress through Number Analogy
Worksheet 8 of 30 (26% complete)

Question 1

Find the missing number: 2, 1, 4 : 7 :: 2, 2, 3 : ?
Tribonacci pattern: each term is sum of previous three. 2+2+3 = 7

Question 2

Find the missing number: 11 : 66 :: 7 : ?
The relationship is multiplying by 6. So 11 × 6 = 66, and 7 × 6 = 42

Question 3

Find the missing number: 90 : 9 :: 15 : ?
The relationship is the digital root (repeated sum until single digit). Digital root of 90 = 9, of 15 = 6

Question 4

Find the missing number: 5 : 8 (n=2) :: 8 : ?
The nth term formula: a + (n-1)d. For 8, term 2 = 11

Question 5

Find the missing number: 3 : 9 :: 10 : ?
The relationship is squaring the number. So 3² = 9, and 10² = 100

Question 6

Find the missing number: 4 : 8 :: 10 : ?
The multiplier increases by 1: ×2 then ×3. So 10 × 3 = 30

Question 7

Find the missing number: 10 : 12 :: 6 : ?
The relationship is adding 2 (or double for some patterns). Here 6 + 4 = 10

Question 8

Find the missing number: 12 : 3 :: 52 : ?
The relationship is the sum of digits. Sum of digits of 12 = 3, sum of digits of 52 = 7

Question 9

Find the missing number: 36 : 9 :: 20 : ?
The relationship is dividing by 4. So 36 ÷ 4 = 9, and 20 ÷ 4 = 5

Question 10

Find the missing number: 6 : 12 (n=3) :: 2 : ?
The nth term formula: a + (n-1)d. For 2, term 3 = 8

Question 11

Find the missing number: 75 : 3 :: 22 : ?
The relationship is the digital root (repeated sum until single digit). Digital root of 75 = 3, of 22 = 4

Question 12

Find the missing number: 6 : 37 :: 4 : ?
The relationship is square then add 1. 4² + 1 = 17

Question 13

Find the missing number: 56 : 121 :: 73 : ?
The relationship is the sum of number and its reverse. 73 + 37 = 110

Question 14

Find the missing number: 3 : sum of 3 terms = 15 :: 4 : sum of 3 terms = ?
Sum of 3 terms of AP: n/2 × (2a + (n-1)d). For 4, sum = 18

Question 15

Find the missing number: 5 : 25 :: 9 : ?
The relationship is square root. √9 = 81

Question 16

Find the missing number: 1, 3 : 4 :: 3, 2 : ?
Fibonacci pattern: each term is sum of previous two. 3 + 2 = 5

Question 17

Find the missing number: 24 : 18 :: 22 : ?
The subtractor increases: -6 then -9. So 22 - 9 = 13

Question 18

Find the missing number: 3 : 12 :: 3 : ?
The relationship is double factorial. 2 × 3! = 12, 2 × 3! = 12

Question 19

Find the missing number: 3 : sum of 2 terms = 9 :: 5 : sum of 2 terms = ?
Sum of 2 terms of AP: n/2 × (2a + (n-1)d). For 5, sum = 13

Question 20

Find the missing number: 31 : 6 :: 11 : ?
The relationship is the gap to the next prime. Gap after 11 is 2
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