# 5.3: Follow the Rule 3

**At Grade**Created by: CK-12

Look at the table below. stands for a number. Can you follow the rule and complete the table? In this concept, we will practice using rules to complete tables.

### Guidance

In order to complete function tables like the one above, we can use the problem solving steps to help.

- First,
**describe**what you see in the table. - Second, identify what
**your job**is. In these problems, your job will be to complete the table. - Third, make a
**plan**. In these problems, your plan should be to use the rules to help you to complete the table. - Fourth,
**solve**. In these problems you will solve by completing the table. - Fifth,
**check**. In these problems you will check by making sure that the numbers in the table work with the rule.

#### Example A

Use the rule to complete the table.

**Solution:**

We can use problem solving steps to help.

7 | 5 |

3 | 1 |

9 | 7 |

10 | 8 |

15 | 13 |

36 | 34 |

20 | 18 |

29 | 27 |

54 | 52 |

#### Example B

Use the rule to complete the table.

**Solution:**

We can use problem solving steps to help.

5 | 25 |

8 | 28 |

6 | 26 |

4 | 24 |

19 | 39 |

53 | 73 |

20 | 40 |

48 | 68 |

69 | 89 |

#### Example C

Use the rule to complete the table.

**Solution:**

We can use problem solving steps to help.

538 | 438 |

810 | 710 |

662 | 562 |

626 | 526 |

149 | 49 |

479 | 379 |

905 | 805 |

700 | 600 |

568 | 468 |

#### Concept Problem Revisited

We can use problem solving steps to help.

### Vocabulary

A ** function** is an example of a

**that states a relationship between two quantities. A**

*rule***is a letter that represents a number that can change value. In this concept, our**

*variable***told us how the two**

*rule***in the table were related.**

*variables*### Guided Practice

Use the rules to complete the tables.

1.

2.

3.

4.

**Answers:**

1. Here is the completed table:

741 | 541 |

800 | 600 |

306 | 106 |

449 | 249 |

530 | 330 |

361 | 161 |

427 | 227 |

936 | 736 |

958 | 758 |

2. Here is the completed table:

2 | 6 |

5 | 15 |

9 | 27 |

4 | 12 |

3 | 9 |

10 | 30 |

1 | 3 |

8 | 24 |

7 | 21 |

3. Here is the completed table:

8 | 4 |

12 | 6 |

10 | 5 |

4 | 2 |

18 | 9 |

2 | 1 |

20 | 10 |

16 | 8 |

14 | 7 |

4. Here is the completed table:

3 | 15 |

7 | 35 |

8 | 40 |

2 | 10 |

9 | 45 |

4 | 20 |

1 | 5 |

5 | 25 |

6 | 30 |

### Explore More

Use the rules to complete the tables.

### Image Attributions

In this concept, students follow rules presented in words to complete two-column function tables. Rules use addition, subtraction, multiplication, or division. Students use problem solving steps to help.

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