IXL | Add and subtract integers: input/output tables

Complete the table using the rule.

Rule: Subtract 10

In	Out
^–10
^–7	^–17
^–1
	^–6
14	4
	6

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Learn with an example

question

What is the rule for this table?

In	Out
^–17	^–13
^–12	^–8
1	5
8	12
12	16
15	19

Rule: Add

solution

Use the rows in the table to find the rule. The rule uses addition and each number increases, so try adding a positive number.

Start with the number in the In column. Figure out what positive number to add to give the value shown in the Out column.

^–17 + 4	=	^–13

^–12 + 4	=	^–8

1 + 4	=	5

8 + 4	=	12

12 + 4	=	16

15 + 4	=	19

The rule is add 4.

Fill in the missing number to complete the rule.

Rule: Add 4

Looking for more? Try these:

Lesson: Adding and subtracting integers

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Questions
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Teacher tools

Work it out

Not feeling ready yet? These can help:

P.3Add integers

P.6Subtract integers

Q.1Add and subtract numbers - up to 100

Lesson: Adding and subtracting integers

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