SOLVED BY USING ADDITION,
SUBTRACTION, MULTIPLICATION, OR DIVISION OF DECIMALS
Now that you have had lessons and practices for all decimal
operations, let's practice using them! Let' start with
some problems to see if you can identify which operation to
use. Click on the button next to the operation you think you
would use to solve the problem.
1. David bought five quarts of strawberries. If each quart
cost $2.90, what was the total cost?
Betty spent $31.50 buying
her class ice cream cones. If her class size is 21, how much
did she spend on each student?
3. Adrian is
training for a 5K race. The following chart shows the distances that
she ran every day.
How can she find how many
miles she has run after 5 days?
4. If Jane gave
the clerk a $20 bill, and the total owed was $18.90, what change
would she receive?
Notice how many
word problems have to do with money? Because our money system
is built on Base 10, you usually have to use decimals (Base
10) when working with money! Now, are you
ready to solve word problems using all four operations? Solve each
problem on another sheet of paper or use mental math, and then check
to see if you are correct!
1.) Eight friends are
sharing the cost of a lottery ticket. The ticket cost $10.
How much money must each person contribute?
2.) Susan has a
checking account with a starting balance of $52.19. One day
she made a deposit of $9.98 and wrote a check for (withdrawal)
$11.15. What was her balance?
3.) Mary is ordering from
a catalog. The blouse she wants costs $22 and the dog leash
costs $8.95. In order to get it sent to her house, she must
pay shipping and handling charges of $5.95. What is the TOTAL
4.) Peggy wants to buy
five CDs at the store. If three of them each cost $15.95 and
the other two each cost $19.98, what is the TOTAL COST?