Question

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

(please be 100 sure)

Answer 1

#1:
170.93
8.15

you are looking at the hundreds place to decided if one runs up or not. 5 or higher rounds up, 4 to zero stays the same

#2: 2913 = 3000; 9912 = 10000
10000 + 3000 = 13000
B.13000

#3: 27 x 4 = 108
if 'friendly' means making it easier, like 27 becomes 30 and 4 becomes 5, well idk what friendlier means so... i give you the exact number. But it looks like 30 x 5 if that is what friendlier means

#4: 78 + 45 = 80 + 50 (round it up)
80 + 50 = 130
D) 130

#5 4.8 x 9.2 = 44.16

closest is 45.36 so...
B) 45.36


hope this helps