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Thursday, November 10, 2011

Krizna's Math Question

2.2 Problem Solving with Rational Numbers in Decimal Form.

11.One January day in Penticton, British Columbia, the temperature read -6.3*C at 10:00 am, and 1.4*C at 3:00 pm

A)What was the change in temperature?
how to solve:you subtract the temperature from 3:oo pm from 10:00 am because the temperature is decreasing.

Step 1:Estimate.

Step 2 Calculate.

Answer:The change in tempurature is 7.7*C

B)What was the average rate of change in tempurature?
how to solve:you divide the answer of (A) (change in temperature) by five because the hours of temperature between ten and three is five.
Step 1 Estimate.

Step 2 Calculate

Answer:1.54*C is the average rate of change in temperature every hour.


  1. Good Job on your post Krizna. I liked how you really explained how you got the answer really well. Also great job using the pictures to explain your answer better.

  2. Nice job Krizna! You explained your work in a very simple, understandable way. Nice clear pictures! Maybe try adding more colour, however you did a good job! Keep it up!

  3. Great job Krizna! I like how you did the work, it is very easy to understand and it is also very neat. I agree with Melanie, next time add some more colour, but you did a great job!

  4. Great job Krizna. I liked how you estimated first then got your answers. You explained your work really well and great big pictures.