1) which number rounds up when rounded to the nearest tenth?

55. 24

170.93

0.12

8.15



2)

estimate the value of 2968 + 9912 by rounding each number to the thousands.

14,000

13,000

12,000

7000


3)

which statement below shows the best use of friendly numbers to estimate the value of 27 ·times 4

25 times 4 = 100

30 times 5 = 150

27 times 4 = 108

20 times 4 = 80

4)

marcus has 78 baseball cards and 45 basketball cards. estimate the total number of cards marcus has.

30

33

123

130

5)

determine which answer is reasonable for 4. 8 times 9.2.

14

45.36

432

870.4

( be 100 sure)