Froggy Jumps Odd Numbers Skip Counting QuizOnline version Skip counting by odd numbers. by Arnab Biswas 1 In the sequence 1, 3, 5, 7, 9, what is the 5th number? a 9 b 7 c 11 2 What is the sum of the first 4 odd numbers (1+3+5+7)? a 18 b 16 c 12 3 What is the 7th number in the sequence 1,3,5,7,9,11,13? a 17 b 13 c 15 4 What is the common difference in the sequence of odd numbers starting at 1? a 1 b 2 c 3 5 Which number is not in the sequence 1,3,5,7,9? a 5 b 9 c 8 6 What is the nth term formula for odd numbers starting at 1? a n+1 b 2n-1 c 2n+1 7 Sum of the first 6 odd numbers equals? a 40 b 30 c 36 8 What is the 2nd partial sum of odd numbers (1+3)? a 4 b 6 c 2 9 What is the 100th term in the sequence 1,3,5,...? a 200 b 199 c 198 10 Which description matches the sequence 1,3,5,7,9,...? a Prime numbers b Even numbers c Odd numbers increasing by 2