Numbers Before, Between and After - Worksheet Digital - Free Printable

Let’s solve each question one by one. We’re looking for numbers that come before, after, or between other numbers — just like counting in order: 1, 2, 3, 4, 5...

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1) 15 comes before ______.
When we count, after 15 comes 16. So 15 comes before 16.

2) ______ comes after 19.
After 19 is 20. So the answer is 20.

3) ______ comes between 10 and 12.
Between 10 and 12 is 11. Count: 10, 11, 12 → so 11.

4) 8 comes before ______.
After 8 is 9 → so 8 comes before 9.

5) 19 comes after ______.
Before 19 is 18 → so 19 comes after 18.

6) 17 is between 16 and ______.
If 17 is between 16 and something, then that something must be 18 (because 16, 17, 18). So 18.

7) ______ comes before 12.
Before 12 is 11 → so 11.

8) 9 comes after ______.
Before 9 is 8 → so 9 comes after 8.

9) ______ comes between 15 and 17.
Between 15 and 17 is 16 → so 16.

10) 13 is between ______ and 15.
If 13 is between a number and 15, then that number must be 12 (because 12, 13, 15? Wait — no! That skips 14.)

Wait — let’s check again:

“13 is between ___ and 15”

That means the three numbers in order are: [blank], 13, 15? But that would mean 14 is missing — which doesn’t make sense.

Actually, “between” usually means immediately between — so if 13 is between X and 15, then it should be X, 13, 15 — but that skips 14. That can’t be right.

Wait — maybe it’s X, 13, 15 meaning 13 is in the middle of two numbers where one is less than 13 and one is greater — but not necessarily consecutive?

But in this worksheet, all other questions use *consecutive* numbers.

Look at #6: “17 is between 16 and ___” → answer was 18 → so 16, 17, 18 → consecutive.

Similarly, #3: between 10 and 12 → 11 → consecutive.

So for #10: “13 is between ___ and 15”

If 13 is between two numbers, and one is 15, then the other must be 12? But 12, 13, 15 — that skips 14. That breaks the pattern.

Wait — perhaps it’s a typo? Or maybe I’m misunderstanding.

Alternative interpretation: Maybe “13 is between A and B” means A < 13 < B, and they want the immediate neighbors? But 13 is between 12 and 14 — not 15.

Unless... wait — look at the wording: “13 is between ___ and 15”

Maybe they mean: 13 is between [some number] and 15 — implying that 13 is closer to 15? No.

Perhaps it’s a mistake? Let me think differently.

In some contexts, “between” might not require consecutiveness — but in this worksheet, every other problem uses consecutive integers.

Check #6 again: “17 is between 16 and ___” → clearly expecting 18.

#3: between 10 and 12 → 11.

So likely, for #10, they meant: 13 is between ___ and 14? But it says 15.

Wait — what if it’s “13 is between 12 and 15”? Then 13 is between them, but not immediately — but that would be unusual for this level.

Alternatively — maybe it’s a trick? Let’s list numbers around 13:

11, 12, 13, 14, 15

If 13 is between X and 15, and we assume “between” means directly adjacent in sequence, then the only way is if X is 14? But 14, 13, 15 — that’s not increasing.

No — “between” implies ordered: smaller, middle, larger.

So if 13 is between A and 15, then A must be less than 13, and 13 < 15, so A < 13 < 15.

The integer immediately before 13 is 12, and immediately after is 14.

But 15 is given — so perhaps they want the number such that 13 is between it and 15 — meaning the sequence is A, 13, 15 — which would require A = 11? Because 11, 13, 15 — but that skips 12 and 14.

That seems wrong.

Wait — let’s read the question again: “13 is between ___ and 15.”

Perhaps it’s a misprint, and it should be “14 is between ___ and 15” — but it says 13.

Another idea: maybe “between” here means “in the range from ___ to 15”, and 13 is inside — but that would be too vague.

Looking back at similar problems:

#6: “17 is between 16 and ___” → answer 18 → so the blank is the next number after 17.

Similarly, #10: “13 is between ___ and 15” — if we follow the same logic as #6, then in #6, 17 is between 16 and 18 — so the blank is the number after 17.

In #10, 13 is between ___ and 15 — so if 15 is the upper bound, then the blank should be the number before 13? But that would be 12, and 12, 13, 15 — still skips 14.

Unless... perhaps for #10, they mean 13 is between 12 and 14, but wrote 15 by mistake? Unlikely.

Wait — let's consider the possibility that "between" does not require consecutive numbers in this context. For example, 13 is between 10 and 15 — true, but not helpful.

But in all other cases, it's consecutive.

Let me check online or standard worksheets — but since I can't, I'll rely on logic.

Perhaps for #10, it's "13 is between 12 and 14", but the worksheet says 15 — maybe a typo.

But let's look at the pattern of the questions:

Questions 1,4,7 ask for "comes before" — so you add 1 to get the next number.

Questions 2,5,8 ask for "comes after" — subtract 1.

Questions 3,9 ask for "between" two numbers — take the average or the middle number.

Question 6: "17 is between 16 and ___" — so 16, 17, ? → ? = 18

Question 10: "13 is between ___ and 15" — so ?, 13, 15

For this to be consecutive, it should be 12, 13, 14 — but 15 is given, not 14.

Unless the blank is 14? But 14, 13, 15 — that's not sorted.

I think there might be a mistake in my reasoning.

Another approach: in some curricula, "A is between B and C" means B < A < C, and they may not be consecutive.

For example, 13 is between 10 and 15 — true.

But in this worksheet, for #3, between 10 and 12 is 11 — consecutive.

For #9, between 15 and 17 is 16 — consecutive.

For #6, between 16 and 18 is 17 — consecutive.

So for #10, if 13 is between X and 15, and we want X such that 13 is immediately between them, then X should be 12, and 15 should be 14 — but it's written as 15.

Perhaps it's "14 is between ___ and 15" — but it's 13.

Let's calculate the difference.

If 13 is between A and 15, and assuming symmetry, then A = 13 - (15 - 13) = 13 - 2 = 11.

So 11, 13, 15 — with 13 in the middle.

And in some contexts, "between" can mean the midpoint, even if not consecutive.

For example, in number lines, 13 is midway between 11 and 15.

Distance from 11 to 13 is 2, from 13 to 15 is 2 — yes!

Whereas for #3: between 10 and 12 — distance 1 each side — 11.

For #9: between 15 and 17 — 16.

For #6: between 16 and 18 — 17.

All those have equal spacing of 1.

For #10, if 13 is between A and 15, and 13- A = 15-13, then 13-A = 2, so A=11.

And 11, 13, 15 — with 13 in the center.

This makes sense mathematically.

In elementary math, sometimes "between" for non-consecutive numbers is used when the middle is specified.

For example, "what number is between 10 and 20?" could be 15, but here it's specified that 13 is between, so find the other end.

Given that, for #10, if 13 is between X and 15, and 13 is exactly in the middle, then X = 11.

Because (11 + 15)/2 = 13.

Yes! That works.

In contrast, for #3: between 10 and 12, the middle is 11, which is (10+12)/2=11.

Same for others.

For #6: between 16 and 18, middle is 17.

So for #10: 13 is between X and 15, so (X + 15)/2 = 13

Then X + 15 = 26

X = 11

Perfect.

So the answer is 11.

Even though 12 and 14 are skipped, in this case, it's about the numerical midpoint, not consecutive counting.

But in the context of the worksheet, since all other "between" questions involve consecutive numbers, this might be an exception or a different interpretation.

However, given the calculation, 11 is correct if we interpret "between" as the arithmetic mean.

Moreover, in the answer key logic, it fits.

To confirm, let's see if there's another way.

Suppose we ignore the midpoint and think sequentially.

If 13 is between A and 15, and we list numbers: ...11,12,13,14,15...

Then 13 is between 12 and 14, or between 11 and 15, etc.

But the question specifies "and 15", so A must be less than 13.

The most reasonable answer based on the pattern of other questions is that for "A is between B and C", if B and C are given, A is the middle, but here A is given, and one endpoint is given, find the other.

In #6, "17 is between 16 and ___" — so 16 and ? , with 17 in between — so ? = 18.

Similarly, in #10, "13 is between ___ and 15" — so ? and 15, with 13 in between — so ? = 11, because 11,13,15 with 13 in middle.

Whereas if it were consecutive, it should be 12 and 14 for 13, but 15 is given, so it must be 11.

I think 11 is intended.

Perhaps the worksheet has a typo, but based on math, 11 is correct.

Let's proceed with that.

So final answers:

1) 16

2) 20

3) 11

4) 9

5) 18

6) 18

7) 11

8) 8

9) 16

10) 11

Now, double-check #10: if 13 is between 11 and 15, yes, numerically it is, and the average is 13.

In some educational contexts, this is accepted.

For consistency, since #6 uses the same structure and gives the next number, but in #6, 17 is between 16 and 18 — which are consecutive, while in #10, 13 between 11 and 15 are not consecutive, but the relationship holds.

I think it's fine.

So I'll go with 11 for #10.

Final Answer:

1) 16
2) 20
3) 11
4) 9
5) 18
6) 18
7) 11
8) 8
9) 16
10) 11