4.4A

Adding and subtracting word problems

Add/subtract decimals things to remember

• LINE UP THE DECIMALS

• Don't forget about the invisible zero at the end of whole numbers.

• Don't forget to fill in zeros in the empty spaces

• If there is more on the bottom number you have to borrow for subtraction.

• Use key words when you can, but mainly understand what the problem is asking.

• PAY ATTENTION TO HOW MANY THINGS ARE IN YOUR PROBLEM!

• EACH is an important word to know.

Multiple Choice

Where is the decimal in the number 879

• After the 8

• After the 9

• After the 7

• before the 8

Gridables

Gridables are used to input answers in on the staar.

-know the place values of the gridable

-if your answer has no decimals make sure it goes in the right place!

-Les do some practice together

Open Ended

Alex scored 1,337.13 points on a video game. Brittany scored 448.75 fewer points

than Alex. How many points did Brittany score?

Multiple Choice

What is the sum of 1.70+4.65?

• 2.95

• 5.35

• 6.35

• 3.35

Multiple Choice

7.9 - 3.47

• 11.37

• 4.43

• 3.32

• 4.37

Some problems are multistep

• Understand what the problem is asking

• think what do I need to know to solve this problem

• Pay attention to how many items are being bought, or are in the problem

• Draw a picture!

Multiple Choice

Margarita paid $42.28 for 3 dolls. She paid $12.2 for the 1st doll and 20 dollars for the second doll. How much did she pay for the 3rd one?

• $30.08

• $10.08

• $54.48

• $50.08

Breaking down the problem

Margarita paid $42.28 for 3 dolls. She paid $12.2 for the 1st doll and 20 dollars for the second doll. How much did she pay for the 3rd one?

Multiple Choice

Melanie D. bought a blouse and a pair of jeans. She paid $60 dollars for both. She paid $24.53 for the jeans. How much did she pay for the blouse?

• $35.47

• $23.93

• $36.47

• $30

Breaking down the problem

Melanie D. bought a blouse and a pair of jeans. She paid $60 dollars for both. She paid $24.53 for the jeans. How much did she pay for the blouse?

Poll

How do you feel about adding and subtracting whole numbers and decimals

• Not good at all

• so, so

• Okay

• I totally get it