Guided Practice

The table shows the ratio 4 days for every 2 weekends. Fill in the missing values in the table and plot the points to show the ratio 4 : 2.

Weekends | Days |
---|---|

2 | 4 |

4 | ? |

? | 12 |

The table below shows the ratio 1 dollar : 4 quarters.

Complete the table. Then plot the points on the right to show the ratio.

Quarters | Dollars |
---|---|

2 | |

16 |

The table below shows the ratio 1 orange to 1 apple.

Complete the table. Then plot the points on the right to show the ratio.

Apples | Oranges |
---|---|

3 | |

5 | |

6 |

Alicia jogs at 5 miles for every 1 hour.

Complete the table. Then plot the points on the right to show the ratio of miles to hours.Hours | Miles |
---|---|

2 | |

4 | |

25 | |

6 |

Bananas cost $3 for every pound at the grocery store.

Complete the table. Then plot the points on the right to show the ratio of dollars to pounds.Pounds | Dollars |
---|---|

Which car got more miles to 1 gallon?

If each of these tables represents ratios, then ANY pair of numbers in a row is that ratio.

So, Car A got 10 ÷ 0.3125 = 32 miles to 1 gallon. And Car B got 5 ÷ 1/6 = 30 miles to 1 gallon.Car A has a greater ratio of miles to gallons than Car B, so it got more miles to 1 gallon.

Estimate the height-to-length ratio shown by the line at the end of the video. Write the ratio as a decimal.

Height to length:

The Xs show juice recipes that are too watery. The Os show recipes that are too sugary. Write two ratios of water to sugar that could be "just right." Write the ratios as decimals.

Water to sugar (just right):

Water to sugar (just right):

The Xs show cocoa recipes that are too chocolatey. The Os show recipes that are too watery. Write a ratio of cocoa mix to water that could be "just right." Write the ratio as a decimal.

Cocoa mix to water (just right):

The Xs show purple paint mixes that are too red. The Os show mixes that are too blue. Write a ratio of red to blue paint that could be "just right." Write the ratio as a decimal.

Red to blue paint (just right):

Study the tables. Write each ratio as a decimal.

Earth weight to Venus weight:

Earth weight to Mars weight:

Study the tables. Write the ratio of ounces to cost for each theater as a decimal.

Theater A:

Theater B:

Knowing your operations—addition, subtraction, multiplication, and division—is so important, even to help you learn algebra! Division is one of the trickiest, so it's important to practice until you can think of division facts in your head.

For example, what is 72 ÷ 7? Well, 10 × 7 = 70, so 72 ÷ 7 = 10 with 2 left over.Think of division expressions and try to get the quotient in your head. Then check your guess on the interactive tool at the right. Practice makes perfect!

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