3 Vocabulary - 5 Problems U4-L7
Unit 4 3Vs/5Ps Links - Click Here
Unit 4 L6, L7, L8 Live Lesson Recording
What do you need to know how to do in this selection?
3 Vocabulary Terms - Define/Illustrate
Before you add or subtract decimals, what must you do?
Steps to changing the power of 10 in SN:
Words that tell you to subtract:
5 Problems - SHOW ALL WORK!
In 2012, the population of NY was about 2.4 x 10^7 and the population of Oregon was 4 x 10^5.
How many more people live in NY than in Oregon?
4.29 x 10^6 - 1.68 x 10^6=
5.08 x 10^-4 - 3.12 x 10^-5=
A. 6 x 10^4 - 8 x 10^2=
B. 6 x 10^4 - 0.08 x 10^4=
In problem 4, what do you notice between the two answers?
What do I need help with?
In this selection, you need to know how to add and subtract decimals, change the power of 10 in scientific notation, and identify words that indicate subtraction in a problem.
1. Before you add or subtract decimals, you must make sure the decimal points are lined up properly.
2. Steps to changing the power of 10 in scientific notation: move the decimal point to create a number between 1 and 10, and then adjust the power of 10 accordingly.
3. Words that tell you to subtract: minus, difference, fewer, less, subtract, decrease.
5 Problems:
1. NY population - Oregon population = ??
2. 4.29 x 10^6 - 1.68 x 10^6 = ??
3. 5.08 x 10^-4 - 3.12 x 10^-5 = ??
4. A. 6 x 10^4 - 8 x 10^2 = ??
5. B. 6 x 10^4 - 0.08 x 10^4 = ??
In problem 4, you may notice that the answer is a negative number, which means you have more of the second value than the first.
If you need help with any of these problems or concepts, it is recommended that you seek clarification from your teacher or a tutor.