Addition & Subtraction:
$4.37 + $0.99 + $1.75
+ $2.53 -$1.90
= $4.50 + $1.00 + $2.00
+ $2.50 - $2.00
= $8.00
Note: When
estimating prices, especially at the grocery store it is better
to over estimate rather than underestimate.
Example: $2.65 should be estimated
to $3.00 rather than $2.50 |
Multiplication:
Giant Oranges are $0.85
each so you buy 5. Your bill will
be less than $5.00 since you estimate
each orange as costing a $1.00 and
5
x $1.00= $5.00.
Division:
You buy 6 drinks for you
and your friends, and the bill is $5.80. How much per
drink?
About $1.00 because $5.80 is about $6.00
and $6.00 divided by 6 is $1.00. |