MATH 5

WRAP UP A thermometer is a device used to measure temperature or the hotness and coldness of an object. It has a glass tube containing mercury that rises and falls goes up and down. It also has marks labeled with numbers that tell the number of degrees, celcius, as indicated numbers by the mercury level. Using a Celsius thermometer, the temperature is read using “degrees Celsius” and written using C. ON YOUR OWNChoose the more sensible temperature reading for the situation. Copy the readings inyour notebook.1. 2. newly baked cake hot milk3. 4.iced tea a very hot day 4

5. 6.boiling water freezing point of water 5

WORD PROBLEMS INVOLGVRIANDGEBVODY/AIR TEMPERATUREWORD PROBLEMS INVOLVING BODY / AIR TEMPERATURE Objective: Solve word problems involving body/air temperature following the steps in problem solvingREVIEWChoose the most sensible temperature. 2. a cold day 1. sick with fever39oC 37oC 36oC 30oC 28oC 10oC3. normal body temperature 4. very warm day36oC 37oC 50oC 100oC 39oC 10oC 1

STUDY AND LEARNRead and understand the problem. During the day, the temperature was 27C. At night, the temperature droppedto 18C. How much was the decrease in temperature? What is asked? (decrease in temperature) What are given? (day temperature – 27C; night temperature – 18C) What is the word clue? (decrease) What operation are we going to use? (subtraction) What is the number sentence? (27 – 18 = n) Solution: 27 – 18 = 9CLet us draw a diagram to visualize the problem. The word “decrease” tells us tosubtract, 18C from 27C. “Decrease” means that the mercury movesdown.Count the decrease in the temperature readings. It decreased by 9C.Let us try another problem. Michelle has fever. Mother wants her to stay in bed and drink a lot of water. Ifthe normal body temperature is 37C, what will her temperature be? Will it be greaterthan 37C or less than 37C?When we get sick, our body becomes hotter. So, what will the body temperature ofMichelle be? Correct! Her body temperature will be greater than 37C. 2

TRY THESEGet a piece of paper and solve the following problems.1. The temperature reading in the morning was 26.8C. At mid-day, it rose to 34.6C. How much hotter was the temperature at mid-day than the temperature in the morning?2. The average temperature in Baguio City is 21C during the day and 14C at night. What is the difference in the average day and night temperatures? WRAP UP In solving word problems involving temperature, the usual steps in problem solving apply. The main difference is that these problems involve temperature readings. Drawing a picture or diagram will help visualize problem. ON YOUR OWNRead the problems and answer in your notebook.1. Domingo got sick with a temperature of 3C above the normal body temperature. He was brought to the nearby hospital. What do you think was his temperature?2. Marlon played under the sun for two hours. Before he slept in the evening his body temperature became 41C. What was the increase in his normal body temperature?3. Suppose it was 27C in Mt. Banahaw and 25C in Mt. Makiling. Which mountain had a colder temperature? By how much?4. At midnight, the 35C temperature went down to 25C. How much was the decrease in temperature? 3

LINGERAGDREAVPH LINE GRAPHObjective: Read/interpret data presented in a line graphREVIEWUse the bar graph to answer each question. Votes for Favorite Sports120100806040200 Chess Basketball Tennis Swimming Volleyball Badminton1. Which sport has the most number of votes?2. Which sport has the least number of votes?3. How many people voted for chess?4. Which sport has 80 votes?5. Which sports have the same number of votes? 1

Income (in Pesos)STUDY AND LEARNMrs. Mariano keeps a record of the monthly income of her fruit stand so she can see howit earns each month.Mrs. Mariano made a line graph.Find out if the earnings of the fruit stand increased or decreased from January toDecember. Mrs. Mariano’s Monthly Income 14000 12000 10000 8000 6000 4000 2000 0 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec MonthsThe graph above shows the monthly income of Mrs. Mariano’s fruit stand from Januaryto December.From the graph, we can see that: There is an increase and decrease in the income: a. It increased from January to February, from March to June and from July to December. b. It decreased from June to July. 2

In which months were the earnings the same?  It earned the same on the following months: a. February and March b. April and July c. May and August d. June and September  Mrs. Mariano earned the most in December and the least in January.How does a line graph differ from a bar graph? What is used to present data in a linegraph?TRY THESEStudy the line graph then answer the questions that follow. Corn Harvested in Fred’s Orchard 50 40No. of Kaings 30 20 10 0 Tuesday Wednesday Thursday Friday Monday Day1. What days have the same amount of harvest?2. What day has the least harvest?3. What day did he harvest the most?4. What is the biggest harvest?5. What is the least harvest? 3

WRAP UP A line graph is a kind of graph that uses lines to show thetrends or changes over a period of time.ON YOUR OWNA. The line graph shows the weekly savings of Me-anne from her allowance. Study it and answer the questions that follow. Me-anne’s Savings 25 20Savings (in Pesos) 15 10 5 0 2nd 3rd 4th 5th 1st Weeks1. How much did Me-anne save on the 2nd week?2. In what weeks did she save the same?3. On what week did she save the least?4. On what week did she save the most?5. What was her biggest savings for a week?B. Eggs Sold by Ms. Aguilar 4

300 250No. of Eggs Sold 200 150 100 50 0 Tuesday Wednesday Thursday Friday Days Monday1. On what days did she sell the same number of eggs?2. On what days did she sell more than 150 eggs? 5