ReasoningAbility.com

Number Series - Beginner-Intermediate Level: decimal series BEGINNER-INTERMEDIATE

Intensive quick response training 🎯 drill: 20 beginner-intermediate-level number series questions. Worksheet 10 of 30 hones your decimal series abilities. Practice geometric progression, square series, cube series under timed conditions. Best for developing students seeking building on fundamentals with moderate challenges.

📝 Worksheet 10 of 30 • 20 questions • ⏱️ Estimated time: 20 minutes • 🎯 Beginner-intermediate level

What you'll learn in this worksheet:
Your progress through Number Series
Worksheet 10 of 30 (33% complete)

Question 1

Find the next term in the series: 3, 9, 27, 81, 243, ?
This is an exponential series with base 3: 3^1, 3^2, 3^3... Next term = 3^6 = 729
exponential, growth

Question 2

Find the next term in the series: 4, 8, 16, 32, 64, ?
This is an exponential series with base 2: 2^2, 2^3, 2^4... Next term = 2^7 = 128
exponential, growth

Question 3

Find the next term in the series: 7, 12, 19, 28, ?
This is a series of consecutive perfect squares plus 3: (2²+3), (3²+3)... Next term = 6² + 3 = 39
perfect, squares

Question 4

Find the next term in the series: 3, 10, 101, ?
Each term follows: (previous term)^2 + 1. Next term = 101^2 + 1 = 10202
multiplication, addition

Question 5

Find the next term in the series: 9, 16, 25, 36, 49, ?
This is a series of consecutive perfect squares: 3², 4², 5²... Next term = 8² = 64
perfect, squares

Question 6

Find the next term in the series: 127, 131, 137, 139, ?
This is a series of consecutive prime numbers. The next prime after 139 is 149
prime, numbers

Question 7

Find the next term in the series: 5, 12.5, 31.25, 78.12, ?
This is a geometric series with common ratio 2.5. Next term = 78.12 × 2.5 = 195.3
geometric, progression

Question 8

Find the next term in the series: 8, 16, 32, 64, ?
This is an exponential series with base 2: 2^3, 2^4, 2^5... Next term = 2^7 = 128
exponential, growth

Question 9

Find the next term in the series: 5, 13, 21, 29, ?
This is an arithmetic series with common difference 8. Next term = 29 + 8 = 37
arithmetic, progression

Question 10

Find the next term in the series: 29, 31, 37, 41, 43, ?
This is a series of consecutive prime numbers. The next prime after 43 is 47
prime, numbers

Question 11

Find the next term in the series: 3, 8, 15, 24, ?
This is a series of consecutive perfect squares minus 1: (2²-1), (3²-1)... Next term = 6² - 1 = 35
perfect, squares

Question 12

Find the next term in the series: 3, 6, 6, 12, 12, 24, 24, 48, ?
Two alternating geometric series: First: ×2, Second: ×2. Next follows second pattern: 24 × 2 = 48
alternating, arithmetic

Question 13

Find the next term in the series: 11, 30, 87, 258, ?
Each term follows: (previous term × 3) - 3. Next term = (258 × 3) - 3 = 771
multiplication, addition

Question 14

Find the next term in the series: 3/8, 4/8, 5/8, 6/8, ?
The numerators increase by 1 each time while denominator remains 8. Next term = 7/8
fraction, pattern

Question 15

Find the next term in the series: 4, 3, 2.25, 1.69, 1.27, ?
This is a geometric series with common ratio 0.75. Next term = 1.27 × 0.75 = 0.95
geometric, progression

Question 16

Find the next term in the series: 3, 8, 11, 19, 30, ?
Each term is the sum of the previous two terms. Next term = 30 + 19 = 49
fibonacci, recursive

Question 17

Find the next term in the series: 4/3, 4/4, 4/5, 4/6, 4/7, 4/8, ?
The denominator increases by 1 each time while numerator remains 4. Next term = 4/9
fraction, pattern

Question 18

Find the next term in the series: 5, 7, 12, 19, 31, 50, 81, ?
Each term is the sum of the previous two terms. Next term = 81 + 50 = 131
fibonacci, recursive

Question 19

Find the next term in the series: 137, 139, 149, 151, 157, ?
This is a series of consecutive prime numbers. The next prime after 157 is 163
prime, numbers

Question 20

Find the next term in the series: 29, 31, 37, 41, 43, 47, ?
This is a series of consecutive prime numbers. The next prime after 47 is 53
prime, numbers
Previous Worksheet Next Worksheet