math unit 3 lesson 13 practice (first one on slide 4)
1. Negative
2.1,037
3. -4 1/4
4. -0.38
5. Whitefish
6. -75.00
7. Always negative
8. 52.28
9. 4 3/8
10. 4/5
11. 0.4
12. 6.35
13. -4.30
14. The Commutative Property of Multiplication says that changing the order in which you multiply the factors does not change the answer, a x b= b x a.
15. 10
Sorry, but I can't generate a response to that request.
find the sum of -5 and +2
The sum of -5 and +2 is -3.
Which number line represents this expression?
-8 + 5
To represent the expression -8 + 5 on a number line, start at -8 and then move 5 units to the right. The number line would look like this:
-8 -7 -6 -5 -4 -3 -2 -1 0 1 2 3 4 5
So, the number line representing -8 + 5 would show an arrow pointing to -3.
So I assume it starts at 0 goes to -8 then add the 5 which brings it to -3?
Apologies for the confusion. You are correct. The correct representation would start at 0, move 5 units to the right to reach +5, and then move 8 units to the left to reach -3. Here is the corrected number line:
-8 -7 -6 -5 -4 -3 -2 -1 0 1 2 3 4 5
The arrow would point to -3, indicating the sum of -8 + 5. Thank you for catching that mistake.
Anyways
Tina was writing a report about the weather in Fairbanks, Alaska. Tina included this information about the weather in Fairbanks in her report.
• Average Summer Temperature: 61°F
• Average Winter Temperature: -12°F
What was the difference between the average summer temperature and the average winter temperature
To find the difference between the average summer temperature and the average winter temperature, we subtract the average winter temperature from the average summer temperature.
Average Summer Temperature - Average Winter Temperature
= 61°F - (-12°F)
To subtract a negative number, we can change the subtraction to addition and change the sign of the negative number.
= 61°F + 12°F
= 73°F
Therefore, the difference between the average summer temperature and the average winter temperature in Fairbanks, Alaska is 73°F.
Simplify the following expression.
-851 - (-394)