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Friday, 18 June 2021

Dazzling Decimals

 Dazzling Decimals

We are learning to add and subtract up to three decimal places. We are learning to convert between fractions, decimals and percentages.

 Noel and Margaret each had a salary of $60 000 in 2008.

Noel’s salary increased by 11% in 2009 and then increased 6% in 2010. 

Margaret’s salary was increased by 6% in 2009 and then increased by 11% in 2010. 

Who had the greater salary in 2010? Make a guess then check your guess with a calculation.

 A person decides to go on a diet. To get to a healthy weight they must reduce their  food intake by 15%. An average intake is 9200 k a day.

How much of a reduction in average food intake would they need, to get to a healthy weight?

 A real estate agent is paid a commission for selling a house.

The commission is based on:

Sales for: the first $300 000, commission is 3.95%

amounts above $300 000, commission is 2%

How much would be paid to an agent who sells a house for $757 000? 3409853

Flash Addition!

 114 + 97 = 211

 93 + 289= 382

 128 + 87 = 215

163 + 84 = 247

 311 + 93 = 404

Change to fractions and decimals

1. 21% -  0.21  21/100

2. 19% - 0.19 19/100

3. 35% - 0.35 35/100

4. 63% 0.63 63/100

5. 40% 0.40 40/100

6. 15% 0.15 15/100

7. 75% 0.75 75/100

8. 83% 0.83 83/100

9. 7%  0.7 7/100

10. 1% 0.1 01/100



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