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