To solve this problem, let's
go through our 6 step process.
Step 1 - You need to find how many meters of edging
Matt used in his garden.
Step 2 - You know that Matt bought 22.5 meters of
edging and had 105 decimeters left over when he was
finished.
Step 3 - Your plan for solving this problem is to
convert 105 decimeters into meters and then use subtraction
to find how much edging he used.
Step 4 - Since decimeters are smaller than meters,
you estimate about 10 meters is what he had left
and subtract that from 20 meters he bought, so he
should have used about 10 meters of edging in his
garden.
Step 5 - To solve this problem, you convert 105
decimeters into meters. To do this you divide 105
by 10 or in other words move the decimal point one
place to the left. Therefore, you have 105 decimeters
= 10.5 meters. Now you can subtract.
22.5 meters - 10.5 meters = 12 meters
Step 6 - You
look over your choices and find that 12 meters is
a choice, letter C.
Therefore
you select letter C as your answer. |
