## Sunday, November 7, 2010

### Connor's Blog Post for November 4th

Today in math class we were assigned a question from our textbook.

I had to do two questions #23 and #24 on page 62 section 2.2.

23. One week in October in Iqaluit, Nunavut, the daily high temperatures were -4.6 C, -0.5 C, 1.2 C, 2.3 C, -1.1 C, 1.5 C, and -3.0 C. What was the mean daily high temperature that week?

The way I got this was by adding up the temperatures then divided the sum by the the number 7(number of days) to get the average(mean) temperature.

-4.6 + -0.5 = -5.1

-5.1 + 1.2 = -3.9

-3.9 + 2.3 = -1.6

-1.6 + -1.1 = -2.7

-2.7 + 1.5 = -1.2

-1.2 + -3.0 = -4.2

-4.2 / 7 = -0.6

The average tempurature in Iqualit for that week was -0.6.

24.Copy and complete each statement.

A) _ + 1.8 = -3.5

The way to solve this is by using subtraction.

-3.5 - 1.8 = ?

-3.5 - 1 = -4.5

-4.5 - 0.8 = -5.3

The blank in this equation is -5.3

B) -13.3 - _ = -8.9

The way to solve this is by using addition.

-13.3 + -8.9 = ?

An easy way to do this is by converting the two numbers too positive integers then subtracting and converting back.

13.3 - 8.9 = ?

13.3 - 8 = 5.3

5.3 - 0.9 = 4.4

4.4 = -4.4

The number that is needed to fill in the empty space is -4.4.

C) _ x (-4.5) = -9.45

The way to solve this is by using division.

Take the answer and divide it by the factor.

-9.45/-4.5 = ?

The answer that fills the blank is 2.1

D) -18.5/_ = 7.4

The way to solve this is by using using division.

Use the divedend and divided it by the divisor to get the number that fills the blank.

-18.5/7.4 = ?
The answer that fills the blank is 2.5.

Thank You for reading my Blog Post!!
Comment if you like and if there is anything wrong or that should be changed please notify me.