16 Weight


We are learning to: Rename measurements of weight using fractions and decimals. Work backwards to solve puzzles.


Day One Study the steps used to solve the problem in the example below.


A rugby player lifted 170 kg during weight training on Friday, half this weight on Saturday and 195 kg on Sunday. What was the average weight that he lifted over the three days?


Circle the numbers and keywords: 170 kg, half, 195 kg, average Link with operation needed (+, −, × or ÷): Add (+). Divide (÷). Use a strategy: Simplify – break it into steps.


Estimate and calculate: My estimate: around 160 kg


170 kg 85 kg


+ 195 kg 450 kg


450 kg ÷ 3 = 150 kg Answer: 150 kg


Summarise and check how you got your answer: I worked out the weights lifted, then added the three weights and divided by 3 to find the average.


Try these. The following table shows the combined weight of six men’s rugby teams: Ireland


1,533 kg 1


England 1,532 kg


(a) What is the total weight of the teams? (b) What is the average weight of the teams?


Answers: (a) 2


If the Irish women’s rugby team weighs 2 3 of the weight of the Irish men’s team,


how much does the women’s team weigh? 3 (b) Marks: /4


There are 15 players on the Irish men’s team. What is the average weight of each player?


Wales 1,568 kg France 1,513 kg


Scotland 1,512 kg


Italy 1,474 kg


Answer: 68 Strand: Measures Strand Unit: Weight


Marks:


/2


Answer:


Marks: Today’s Marks:


/2 /8


Week 16


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