1)

a scientist records a temperature of 234. 556 celcius in an experiment. the temperature falls 48.01 celcius. what was the temperature after it feel?

give your answer with the appropriate precision.

186.556 celcius

186.56 celcius

186.557 celcius

186.57 celcius



2)

the ocean club collected 24.93 kg of trash on the first weekend of the summer. the club collected 18.3 kg the next weekend. how much more trash was collected the first weekend? give your answer with the appropiate precision.

6.7 kg

6.65 kg

6.63 kg

6.6 kg



3)

wes has 150 m of tape to mark the boundaries of a piece of land with side lengths of 36.2 m, 41.6 m, 39.4 m, and 31.2 m. about how much tape will he have left over? give your answer with the appropriate precision.

1.2 m

1.6 m

2 m

3 m


4)

a company wanted to know if it spent more than 900 on office supplies for the month of january. february, and march. did the company spend more than $900? state whether you should estimate or find the exact answer.

month |paper cost
jan |405.15
feb |398.44
march |200.33

yes, the company spent more than $900. estimate.

no, the company spent less than $900. estimate.

yes, the company spent more than $900. exact answer.

no, the company spent less than $900. exact answer.



5)

which describes a situation with an exact answer is appropriate?

tamika wants to make 3 pictures that will take 42. 8 cm of trim each and 2 picture frames that take 74.5 cm of trim each. she has 280 cm of picture frame trim. does she have enough trim to make the picture frames?

barry buys a dvd for $19.95 and a flash drive for 14.95. he gives the cashier $40. the cashier wants to know how much change to give barry.

riley wants to fill a sandbox with 500 lb of sand. he can move sand from a pile by using a bucket that will carry 22 3/8 lb of sand. about how many buckets full of sand will he need to carry?

it takes martin at least one hour to pain a small wall and at least two hours paint a large wall in a room. how much time will it take martin to pain 4 walls?