Decimal Steps
What are the steps to add and subtract decimals in your own words?
Write the decimals one on top of the other making sure the decimal points are lined up. Add zeros if necessary to make them the same length. Add or subtract and drop the decimal point straight down into the answer.
54.8 + 92.713
147.513
6.73 x 0.04
0.2692
92 - 9.765
82.235
57.96 divided by 2.8
20.7
What are the steps to multiplying decimals in your own words?
Ignore the decimal point and multiply normally. Line up the numbers not the decimal points. Count how many digits are behind the decimal points and go that many places from the right into your answer and place the point.
Ellen wanted to buy the following items:
A DVD player for $49.95
A DVD holder for $19.95
Personal stereo for $21.95
Does Ellen have enough money to buy all three items if she has $90? (HINT: Include a dollar sign in front of your answer & this is a 2 STEP problem).
No, she doesn't have enough money. She would spend $91.85.
You buy 3.9 pounds of trail mix. The mix costs $2.78 PER pound. What is the total price for the trail mix? (HINT: Round your final answer to the nearest hundredths). Also, make sure to include a dollar sign.
$10.84
You are on a 5.3 mile run and have already run 1.56. How many MORE miles do you need to run?
3.74 miles
5.535 divided by 1.23
4.5
What are the steps to dividing decimals in your own words?
Move the decimal point to the right in the divisor until it's a whole number and move it the same number of places in the dividend. Divide normally. Put the decimal point in the quotient directly above the dividend.
Ragnar goes to a store to buy T-shirts. The store has T-shirts on sale for $5.80 EACH. Ragnar has $82.94 left on a gift card. What is the maximum number of T-shirts he can buy using only the gift card?
14.3, so he can only buy 14
In the problem, 3.8 divided by 0.7 = 5.43, the number 5.43 is called the ____________, 0.7 is called the __________, and 3.8 is called the _____________.
You should have 3 words for your answer!
quotient, divisor, dividend
Brad studied a total of 24.4 hours over a period of four days. On average, how many hours did Brad study EACH day?
6.1 hours
Answer to an addition problem:
Answer to a subtraction problem:
Answer to a multiplication problem:
You should have 3 words!
sum, difference, product
FINAL JEOPARDY: If your weekly salary is $1,118.00, how much do you have left each week after you pay for the following? Rent - $437.50; Cable TV -$20.99; Electricity - $46.52; Groceries - $142.87 (HINT: This is a 2 STEP problem and make sure to include a dollar sign in front of your answer).
$470.12