Zach

Uhm this is my math wiki.

I think i'm doing good in math in september. I have made some really dumb mistakes, but its all good.

I got 100 on the green test, 100% on the first unit test, and 97% on the second test,



1. In Alberta: What is the difference between these temperatures.
 * The lowest temperature ever recorded was -61.1 C at Fort Vermillion in 1911.
 * The highest temperature was 43.3 C at Bassano Dams in 1931.

Explain on your own page how to work through this question. 1. 43.3 - (-61.1)= 43 + 61.1= 104.1

When subtracting a negative, you change it to a positive, and add it.

2. A mistake was made in each solution. Identify the line in which the mistake was made, and give the correct solution.

a) 1/3+4/3 x (-1/2) b) 5/3 x (-1/2) c) __5x(-1)__ 3x2

d) =-5/6

The mistake was made in a) because they added before they multiplied. It should be:

1/3+__4/3x (-1/2) 1/3__+ (-4/6) __2/6 - 4/6 -2/6__

-1/3

3. Write a set of rules in your own words that describes how to convert: Put it over the last place in the decimal. So if its .555, the last decimal place is the thousandths, so it's 555/1000, then reduce. Divide the numerator by the denominator. Divide the numerator by the denominator, and multiply by 100. Put the percent over 100, and reduce. Times the decimal by 100. Put the percent over 100, then reduce.
 * decimals to fractions
 * fractions to decimals
 * fractions to percents
 * percents to fractions
 * decimals to percents
 * percents to decimals

4. Print off this puzzle and work through the solutions. [|order of operations puzzle.pdf]\

Lotus 1:60 Length: 7.3 cm = 4.38m Width: 2.8cm =1.792m. Wheel diameter: 1.1cm = 66cm. Wheel to wheel: 2cm = 1.28m

[] Camaro: 1:64 Length: 7.6cm = 4.864m Width: 3.8cm 1.792m Wheel diameter: 1.1cm = 70.4m Wheel to wheel: 2cm = 1.28m

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