Altogether!
What do you do with the decimal points when you are adding decimals?
You must line them up!
True or False: When subtracting decimals you don't have to line up the decimal points!
False! You must line up the decimal point when subtracting!
When multiplying decimals do you have to line up the decimal points??
No! Ignore them and add them back in AFTER you've solved!
When dividing decimals what do you do with the decimal point?
What are the 4 type of operations that we've been working with?
Addition, Subtraction, Multiplication, Division
34.124+12.32
46.444
35.284-25.186
10.098
2.3 x 4
9.2
5.6 /0.8
7
My mom gives me $38 dollars for snacks for the movies! I buy 1 large popcorn for $8.75, a large drink for $6.25, and skittles for $3.15. How much do I have left?
Subtraction!
3.417+17.9
21.317
3.9-1.68
2.22
0.035 x 1.2
0.042
126.75 / 39
3.25
I bought cookies in bulk: 30 for $57 dollars. How much is the price of just 1 cookie?
Division- Unit Rate!
$5.36+$3.27+$6.89
$15.52
0.86-0.342
0.518
3.561 x 9.8
34.8978
30.72 / 12
2.56
The gas station I go to has gas for $3.89 per gallon. I have a discount of $0.25 off each gallon I get. How much would it cost me to get 10 gallons of gas
Subtraction & Multiplication
13.294+25.962
39.256
39.96-3.75
36.21
2.12 x 1.12
2.3744
1237 / 4
309.25
I have $200 in savings! I owe Ms. Kessler $10 for lunch. Mr. Bowker owes me $4.86 for coffee. I buy 3 bags of chips for $2.35 each. How much money do I have left?
Subtraction, Addition, and Multiplication!