Proportions in Real Life

 pancake Old Fashioned Pancakes

  • 1 1/2 cups all-purpose flour
  • 3 1/2 teaspoons baking powder
  • 1 teaspoon salt
  • 1 tablespoon white sugar
  • 1 1/4 cups milk
  • 1 egg
  • 3 tablespoons butter

There are many examples for ratios and proportions in real life such as:

  •  To make 8 pancakes, a recipe calls for 1 ½ cups of flour. How much flour is used for 20 pancakes?
  • Turkey must be cooked for 30 minutes per 1 kg. How long would you have to cook a 5 kg turkey for?
  • Mom uses 2 cups of sugar to make 30 butter cookies. She has five cups of sugar in her sugar canister. How many cookies can she make?
  • A babysitter was paid $112 for 8 hours of work. How much would the babysitter receive for working a 36 hour week?
  • It takes 620 brick to build 100 square feet of wall. How many square feet of wall can be built with 5000 bricks?
  • A builder mixes 1 part of cement with 2 parts of sand and 3 parts gravel. If 6.3 cubic yards of sand are used, how much cement is needed for the mixture?
  • Dads can get 23 miles to the gallon in his car. How many gallons of gas will it take her to drive 320 miles to visit our grandmother?
  • Dad car gets 23 miles/gallon and his gas tank holds 15 gallons. How far can he go on a tank of gas?
  • Five pounds of grass seed covers 120 square feet. Our lawn is 900 square feet. How much seed do we need?
  • I can mow the lawn of a house in 3.5 hours. . How long will it take to mow 6 lawns?
  • A nurse gives a patient her 3 shots during a 12-hour shift. How many shots would the patient receive in a 48 hour period?
  • If students write their own word problems they will learn how word problems are constructed, develop their reasoning skills, and make connections between math concepts and the real world.

CBA 2 Quick Review Problems

Next Monday we will have the Curriculum-Based Assessment 2 (CBA 2). The test is based on the Math 7th curriculum that you are mastering in this six weeks period. The CBA is a powerful tool for testing and measuring student progress, identifying students at risk for failing state tests and identifying skill deficits to be addressed through interventions to increase student learning performance.

It is very important that the teacher knows the strengths and weaknesses of their students to help them to be successful academically. This assessment is just one of the ways to collect data to meet LISD goals.

You can practice solving by yourself the following questions. Work each problem by yourself.  Write the solution to each problem step by step. If you have any doubt about how to solve any question, please see the solution in the presentation.

I am also assigning you a similar homework via your JunoEd/Jupiter account (extra points).

CBA2 Step by Step Solution

CBA1 Make-Up

erasePlease answer carefully each of the following questions (that you failed in the CBA1 exam).

Show me your work, and explain briefly why you failed that question, and what are you going to do to do it right next time you have a similar question.

The make-up exam must be signed by your parent(s) and returned to me.

Instructions for the Makeup:

For any wrong answer you must:

  • Write the original problem
  • Write down your original answer (identify the error, analyze why it happened, and correct it)
  • Identify if your mistake was computational, procedural or conceptual
  • Write down the correct solution to the problem
  • Write one additional problem, similar to the test item, with the correct solution.