Continuing an arithmetic sequence

Difficulty Standard · Set 1neeap

Fill in what you can and press Check. Nothing you type is sent anywhere.

1
What comes next? 47, 42, 37, 32, 27, …
2
What comes next? 59, 64, 69, 74, 79, …
3
What comes next? 43, 47, 51, 55, 59, …
4
What comes next? 7, 16, 25, 34, 43, …
5
What comes next? 12, 16, 20, 24, 28, …
6
What comes next? 18, 9, 0, -9, -18, …
7
What comes next? 30, 33, 36, 39, 42, …
8
What comes next? 24, 36, 48, 60, 72, …
9
What comes next? 12, 7, 2, -3, -8, …
10
What comes next? 39, 41, 43, 45, 47, …
11
What comes next? 60, 70, 80, 90, 100, …
12
What comes next? 37, 40, 43, 46, 49, …
13
What comes next? 37, 47, 57, 67, 77, …
14
What comes next? 50, 59, 68, 77, 86, …
15
What comes next? 42, 36, 30, 24, 18, …
16
What comes next? 45, 53, 61, 69, 77, …
17
What comes next? 20, 9, -2, -13, -24, …
18
What comes next? 37, 41, 45, 49, 53, …
19
What comes next? 60, 67, 74, 81, 88, …
20
What comes next? 45, 50, 55, 60, 65, …

What is in this set

The numbers in this set run from 1 to 103.
Every problem in it will step by a constant amount.
23% of them run downwards.
A careful solution takes 2 written steps on average.
The mistake this set invites most often, in 77% of the problems: the terms were doubled.
Answers are a whole number.

Drawing 240 problems from this page produced 220 different ones, 92% — so a sheet of 20 is a new sheet almost every time.

The same skill, harder or easier

We would put this in front of a grade 4 class. That is our judgement, not a standard, and it is printed here so you can disagree with it. Everything else we put in that year.