A little homework help for Pg. 72

Here are some better directions and help for the problems in this section.

Alternate Instructions for Pg. 72 2-58 evens

Problems 2,4
Looking at the blanks and knowing how the distributive property works, what do you think need to go into the blank(s)? Be sure to look at the other side of the equals.

Problems 6-14
We did 6 in class. First we need to decide what numbers we could rewrite as an addition or subtraction problem that would make it easier to solve using mental math. Next, use the distributive property to multiply the number on the outside to the new addition or subtraction problem. Simplify it and then add or subtract the two numbers and you will get your answer.
Ex. 7(48)
7(50 - 2) *rewrite*
7(50) - 7(2) *distribute*
350 - 14 *simplify*
336 *add or subtract*

Problems16-26
Use the distributive property to make a problem simpler by working backwards, or factoring out what is shared. We did number 16 as an example in class.
Ex. 2(9) - 3(9) Identify the number that both terms are multiplied by. In this case it is 9.
9(2 - 3) Factor out the nine to the front of the parenthesis or *un-distribute*
9( -1) Now use order of operations and simplify what is inside the parenthesis.
-9 Multiply to get the answer.

Problems 30-40
Disregard the ones saying use models and just do as you were shown in class. We did the example today of 2(4x - 1).
Ex. 2(4x - 1) Identify the number on the outside of the parenthesis that you need to distribute. (2)
2(4x) - (2)(1) Distribute the number outside to be multiplied to all the terms on the inside. Keep the sign in the middle the same.
8x - 2 Multiply the terms together and you are finished.

Problem 42
Refer to the notes we took in class and decide which property fits what happens between the two sides of the equals sign.

Problems 44 & 46
These two problems are like problems 6-14. Pick out the numbers that need multiplied and use the same method to do them.

Problem 48
Look at what your friend wrote. Pick out what is wrong with his answer. Hint: look at your distributive property notes.

Problem 50-54
Be sure to refer to your notes from 2-1 on all of the properties. Which property lets you move things around? Which one is about adding zero? Multiplying by 1?

Problem 56
Put t into the correct spot and follow your order of operations.

Problem 58.

Write an equation to solve. Remember that deposits are adding money to your account. Withdrawals and writing checks are taking money out of your account. How much money do you have left in your account?